Update Haskell stackage snapshot to LTS-22.9

[td202]

Purpose

Closes #1093

This upgrades the stack resolver to LTS-22.9, and the corresponding GHC version to 9.6.4.

Changes

• Resolver is update to lts-22.9 in stack.yaml files.
• The package proto-lens-setup and its dependencies proto-lens-protoc and ghc-source-gen are not included in the LTS distribution, so specific versions from Hackage are pinned in the stack.yaml files.
• The -fPIC compiler option is disabled on Windows, as it results in the compiled code crashing due to access violations. Position independent code is not used on Windows in any case. There is an open GHC issue that seems to be related: https://gitlab.haskell.org/ghc/ghc/-/issues/24016
• TypeOperators is added to the default extensions. In future, this will be needed for using ~, and currently will generate a warning if not enabled.
• Some imports are changed due to changes in library structure (notably, Control.Monad is explicitly imported, whereas it previously was implicitly imported through other monad modules).
• Some code changes make types more explicit, e.g. in (type-changing record updates)[https://gitlab.haskell.org/ghc/ghc/-/wikis/migration/9.6#type-changing-record-updates-involving-type-families].
• In some cases where redundant constraint warnings were suppressed, this has been lifted. In other cases, the reason why they are suppressed is updated.

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.

[abizjak]

Had some problems with installing ghc 9.6.3 which were "fixed" by restarting the build a few times.

Not very reassuring, but seems to work.