Create CMS 6 branches for all commercially supported modules

[GuySartorelli]

It's time! We're ready to open some branches in preparation for CMS 6 work.

Acceptance criteria

• All commercially supported modules have a next-major branch
• Composer dependency constraints point to the new branches
• Update - the following have been split off on this new card
  - CI for all commercially supported modules passes on the next major branch for all commercially supported modules
  - CI for the next-major branch does not run on a cron
  - Merged ups still between 5 and 6 are enabled.

Things we are explicitly not doing yet

• Changing default branches
• Adding 6 to the docs dropdown
• Adding affects/v6 label? (i.e. if we see a bug that only happens on the new 6 branch, it should be labelled with affects/v6)

Other concerns

We'll have a seperate card to handle Rhino updates.

New issues created

• Update gha repos and rhino for CMS 6 #199
• Add fluent back into sink recipe-kitchen-sink#52

Tool used to create PRs

• https://github.com/emteknetnz/cms-6-branch-maker

PRs

• DEP Dependencies for CMS 6 recipe-testing#15
• DEP Dependencies for CMS 6 silverstripe-frameworktest#163
• DEP Dependencies for CMS 6 silverstripe-behat-extension#264
• DEP Dependencies for CMS 6 silverstripe-serve#38
• DEP Dependencies for CMS 6 silverstripe-testsession#88
• DEP Dependencies for CMS 6 silverstripe-linkfield#231
• DEP Dependencies for CMS 6 silverstripe-admin#1681
• DEP Dependencies for CMS 6 silverstripe-campaign-admin#295
• DEP Dependencies for CMS 6 bringyourownideas/silverstripe-maintenance#211
• DEP Dependencies for CMS 6 bringyourownideas/silverstripe-composer-update-checker#81
• DEP Dependencies for CMS 6 silverstripe-gridfield-bulk-editing-tools#266
• DEP Dependencies for CMS 6 cwp-agencyextensions#113
• DEP Dependencies for CMS 6 cwp-starter-theme#243
• DEP Dependencies for CMS 6 cwp-watea-theme#179
• DEP Dependencies for CMS 6 silverstripe-elemental#1146
• DEP Dependencies for CMS 6 dnadesign/silverstripe-elemental-userforms#89
• DEP Dependencies for CMS 6 silverstripe-asset-admin#1443
• DEP Dependencies for CMS 6 silverstripe-assets#592
• DEP Dependencies for CMS 6 silverstripe-auditor#70
• DEP Dependencies for CMS 6 silverstripe-blog#743
• DEP Dependencies for CMS 6 silverstripe-cms#2923
• DEP Dependencies for CMS 6 silverstripe-contentreview#224
• DEP Dependencies for CMS 6 silverstripe-crontask#87
• DEP Dependencies for CMS 6 silverstripe-documentconverter#70
• DEP Dependencies for CMS 6 silverstripe-elemental-bannerblock#134
• DEP Dependencies for CMS 6 silverstripe-elemental-fileblock#50
• DEP Dependencies for CMS 6 silverstripe-environmentcheck#99
• DEP Dependencies for CMS 6 silverstripe-errorpage#102
• DEP Dependencies for CMS 6 silverstripe-externallinks#121
• DEP Dependencies for CMS 6 silverstripe-framework#11152
• DEP Dependencies for CMS 6 silverstripe-graphql#572
• DEP Dependencies for CMS 6 silverstripe-gridfieldqueuedexport#99
• DEP Dependencies for CMS 6 silverstripe-hybridsessions#100
• DEP Dependencies for CMS 6 silverstripe-iframe#81
• DEP Dependencies for CMS 6 silverstripe-installer#366
• DEP Dependencies for CMS 6 silverstripe-ldap#70
• DEP Dependencies for CMS 6 silverstripe-lumberjack#141
• DEP Dependencies for CMS 6 silverstripe-mimevalidator#73
• DEP Dependencies for CMS 6 silverstripe-realme#132
• DEP Dependencies for CMS 6 silverstripe-session-manager#183
• DEP Dependencies for CMS 6 recipe-authoring-tools#33
• DEP Dependencies for CMS 6 recipe-blog#49
• DEP Dependencies for CMS 6 recipe-cms#82
• DEP Dependencies for CMS 6 recipe-collaboration#29
• DEP Dependencies for CMS 6 recipe-content-blocks#38
• DEP Dependencies for CMS 6 recipe-core#92
• DEP Dependencies for CMS 6 recipe-form-building#32
• DEP Dependencies for CMS 6 recipe-reporting-tools#41
• DEP Dependencies for CMS 6 recipe-services#32
• DEP Dependencies for CMS 6 silverstripe-registry#94
• DEP Dependencies for CMS 6 silverstripe-reports#177
• DEP Dependencies for CMS 6 silverstripe-restfulserver#119
• DEP Dependencies for CMS 6 silverstripe-securityreport#76
• DEP Dependencies for CMS 6 silverstripe-segment-field#99
• DEP Dependencies for CMS 6 silverstripe-sharedraftcontent#226
• DEP Dependencies for CMS 6 silverstripe-siteconfig#157
• DEP Dependencies for CMS 6 silverstripe-sitewidecontent-report#81
• DEP Dependencies for CMS 6 silverstripe-spamprotection#112
• DEP Dependencies for CMS 6 silverstripe-staticpublishqueue#185
• DEP Dependencies for CMS 6 silverstripe-subsites#558
• DEP Dependencies for CMS 6 silverstripe-tagfield#280
• DEP Dependencies for CMS 6 silverstripe-taxonomy#106
• DEP Dependencies for CMS 6 silverstripe-textextraction#89
• DEP Dependencies for CMS 6 silverstripe-userforms#1267
• DEP Dependencies for CMS 6 silverstripe-versioned#439
• DEP Dependencies for CMS 6 silverstripe-versioned-admin#327
• DEP Dependencies for CMS 6 silverstripe-versionfeed#100
• DEP Dependencies for CMS 6 symbiote/silverstripe-advancedworkflow#521
• DEP Dependencies for CMS 6 symbiote/silverstripe-gridfieldextensions#382
• DEP Dependencies for CMS 6 symbiote/silverstripe-multivaluefield#103
• DEP Dependencies for CMS 6 symbiote/silverstripe-queuedjobs#420
• DEP Dependencies for CMS 6 silverstripe-mfa#528
• DEP Dependencies for CMS 6 silverstripe-totp-authenticator#146
• DEP Dependencies for CMS 6 silverstripe-webauthn-authenticator#170
• DEP Dependencies for CMS 6 silverstripe-login-forms#167
• DEP Dependencies for CMS 6 silverstripe-dynamodb#60
• DEP Allow graphql ^6 silverstripe-graphql-devtools#52
• DEP Dependencies for CMS 6 silverstripe-proxy-db#4
• DEP Dependencies for CMS 6 recipe-kitchen-sink#50

Updated PRs

• DEP Dependencies for CMS 6 silverstripe-event-dispatcher#24
• DEP Use silverstripe/event-dispatcher ^2 silverstripe-graphql#575
• DEP Dependencies for CMS 6 tractorcow-farm/silverstripe-fluent#827
• DEP Add fluent 8 recipe-kitchen-sink#53

[GuySartorelli]

Reassigning to Steve since there's still a PR in draft

[GuySartorelli]

Assigning back to Steve for ci or whatever else is needed next