⬆️(deps) Bump grist version to 1.7.5 (MinBZK#255)

Author: ChristopherSpelt

helmfile/environments/default/container.yaml.gotmpl

@@ -20,7 +20,7 @@ container:
   grist:
     registry: "registry-1.docker.io"
     repository: "gristlabs/grist"
-    tag: "1.6.1"
+    tag: "1.7.5"
     imagePullSecret: ~
   minio:
     registry: "registry-1.docker.io"