Getting the value for a header GUC on PostgreSQL v14 is done using `current_setting('request.headers')::json->>'name-of-header'` and in a similar way for `request.cookies` and `request.jwt.claims`
PostgreSQL versions below 14 can opt in to the new JSON GUCs by setting the `db-use-legacy-gucs` config option to false (true by default)
* Run CI only on pull requests, push to main and push
to tags matching v*. This avoids running the CI more than
once for a single user action
* Change pre-releases, which are now identified by a version
number with 4 components (e.g., 1.1.1.1)
* Change how release artifacts are packaged, ensuring they
are executable and compressed with xz
