Update Gafaelfawr to 12.1.0

New features for ingress labeling, better authentication metrics,
and more OpenID Connect client support.

applications/gafaelfawr/Chart.yaml

@@ -5,7 +5,7 @@ description: "Authentication and identity system"
 home: "https://gafaelfawr.lsst.io/"
 sources:
   - "https://github.com/lsst-sqre/gafaelfawr"
-appVersion: 12.0.1
+appVersion: 12.1.0
 
 dependencies:
   - name: "redis"