fix: improving stage skipping for releasing

[RobPasMue]

Issues were due mostly to the dependency definition between stages. The following changes were made:

• release stage required all previous stages to succeed. Since pre-commit was being skipped, this triggered the release stage to be skipped as well... thus requiring the always() condition as well
• making Docker push permissions explicit in the docker stage
• docker stage conditions were adapted so that scheduled runs continue to go through but if a release is being performed, it requires the release stage to succeed as well