ci(release): Enable the CalVer flag for release

[BYK]

We need this for automated version numbers

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

Instructions and example for changelog

For changes exposed to the Python package, please add an entry to py/CHANGELOG.md. This includes, but is not limited to event normalization, PII scrubbing, and the protocol.

For changes to the Relay server, please add an entry to CHANGELOG.md under the following heading:

1. Features: For new user-visible functionality.
2. Bug Fixes: For user-visible bug fixes.
3. Internal: For features and bug fixes in internal operation, especially processing mode.

To the changelog entry, please add a link to this PR (consider a more descriptive message):

- Enable the CalVer flag for release. ([#906](https://github.com/getsentry/relay/pull/906))

If none of the above apply, you can opt out by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against 25e6d8c

[chadwhitacre]

Seems reasonable. Did not test.