ProtectedBranches should be able to handle pushing tags gracefully

[hasghari]

This is a fix for Issue #480

When pushing tags, the pushed ref will look something like this:

refs/tags/release-0.1 e0250d9551467b32e2292ff163961b3af0f8ac67 refs/tags/release-0.1 0000000000000000000000000000000000000000

This does not match the regular expression pattern of refs/heads, hence the failure.

[sds]

Thanks for the PR, @hasghari!

Would be nice if we could protect against pushing arbitrary refs, but feels like this solution satisfies the common case.

The failure on Windows seems to be spurious (I've retried that build multiple times at it seems to always fail on a different version of Ruby, so the lack of consistency tells me the failure is not caused by your changes.

[hasghari]

Thanks for the merge @sds. Can we get a patch release for this fix?

[sds]

Looking to release a new version soon, @hasghari. Just waiting for #479 to be wrapped up. Thanks for your patience!