Use default branch for releases instead of release branch

[nitrocode]

Is your feature request related to a problem? Please describe.
Since the default branch is master (older commit) and the release branch is release (latest commit), a renovatebot configuration for atlantis keeps trying to change the dependency to an older commit.

Describe the solution you'd like

• always merge to default branch and cut releases there instead of from the separate branch release
• or if the separate branch release is needed then make it default
• or please provide a renovatebot workaround confirm to track a specific golang dependency (tfswitch) releases from the release branch instead of the default branch

Describe alternatives you've considered
Nome

Additional context

• See PR fix(deps): update github.com/warrensbox/terraform-switcher digest to d7dfd1b in go.mod runatlantis/atlantis#2816
• Related pr from this repo Release #276

[nitrocode]

@warrensbox friendly ping. Please consider this change 🙏

[yermulnik]

Apparently this #351 is to switch from release to master.