build(deps): bump github.com/jackc/pgx/v4 from 4.16.0 to 4.17.1

Bumps [github.com/jackc/pgx/v4](https://github.com/jackc/pgx) from 4.16.0 to 4.17.1.
- [Release notes](https://github.com/jackc/pgx/releases)
- [Changelog](https://github.com/jackc/pgx/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jackc/pgx/compare/v4.16.0...v4.17.1)

---
updated-dependencies:
- dependency-name: github.com/jackc/pgx/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/jackc/pgconn/errors.go

@@ -219,3 +219,20 @@ func redactURL(u *url.URL) string {
 	}
 	return u.String()
 }
+
+type NotPreferredError struct {
+	err         error
+	safeToRetry bool
+}
+
+func (e *NotPreferredError) Error() string {
+	return fmt.Sprintf("standby server not found: %s", e.err.Error())
+}
+
+func (e *NotPreferredError) SafeToRetry() bool {
+	return e.safeToRetry
+}
+
+func (e *NotPreferredError) Unwrap() error {
+	return e.err
+}