Update galaxy.yml automatically when publishing new version

[fosterseth]

right now we have to manually bump galaxy.yml before releasing new collection version. Devtools workflow does not take in an ENV variable for the version, it is all based on galaxy.yml version field.

We should create a "stage release" github workflow that takes in the intended release version as user input

this workflow will update galaxy.yml with the provided version, and then create a draft release with that same version

Then user manually publishes the draft, kicking off the the workflow that will publish collection to ansible galaxy

See the awx stage workflow for inspiration