Merge pull request #6255 from lsst-sqre/t/DM-54461

DM-54461: Upgrade Gafaelfawr to 15.2.3

Author: rra

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: 15.2.2
+appVersion: 15.2.3
 
 dependencies:
   - name: "redis"