Update CI to inherit secrets between workflows

[ajbozarth]

By default called workflows don't have access to secrets, this causes issues when needing access to our dockerhib secrets for push.

This adds secrets: inherit to all local workflow calls.

Fixes #334

[ajbozarth]

Sorry for the continued CI thrash, this was another case of being unable to test prior to merge since it's an issue with secrets. Note that is still the case with this fix, I have no way to test it prior to merge, but based on the following excepts from this docs section I believe this should be the fix.

Workflows that call reusable workflows in the same organization or enterprise can use the inherit keyword to implicitly pass the secrets.

If the secrets are inherited by using secrets: inherit in the calling workflow, you can reference them even if they are not explicitly defined in the on key.

[baentsch]

let's give it a try

[ajbozarth]

And finally success! All green on main (except the failing openvpn one)