Error:
```
gpg: can't do this in batch mode
```
The GPG command:
```
gpg --batch --yes --delete-secret-keys FINGERPRINT
```
requires to use a fingerprint if you use the `--batch` option.
We were using the short ID of the primary key.
Move PASSPHRASE env var to passphrase input
Rename git_user_signingkey input to git-user-signingkey
Rename git_commit_gpgsign input to git-commit-gpgsign
Rename git_tag_gpgsign input to git-tag-gpgsign
Rename git_push_gpgsign input to git-push-gpgsign
Rename git_committer_name input to git-committer-name
Rename git_committer_email input to git-committer-email