[chore]: Bump github.com/jackc/pgx/v5 from 5.3.1 to 5.4.1 (#1907)

Bumps [github.com/jackc/pgx/v5](https://github.com/jackc/pgx) from 5.3.1 to 5.4.1.
- [Changelog](https://github.com/jackc/pgx/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jackc/pgx/compare/v5.3.1...v5.4.1)

---
updated-dependencies:
- dependency-name: github.com/jackc/pgx/v5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/jackc/pgx/v5/pgconn/krb5.go

@@ -63,7 +63,7 @@ func (c *PgConn) gssAuth() error {
 			Data: nextData,
 		}
 		c.frontend.Send(gssResponse)
-		err = c.frontend.Flush()
+		err = c.flushWithPotentialWriteReadDeadlock()
 		if err != nil {
 			return err
 		}