chore(deps): update redis docker tag to v7.2.2 (#162)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| redis | patch | `7.2.1` -> `7.2.2` |

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Reviewed-on: https://git.home/nrdufour/home-ops/pulls/162
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kubernetes/main/apps/mastodon/mastodon/app/helm-release.yaml

@@ -282,7 +282,7 @@ spec:
       # values below must match those of that external redis instance
       image:
         repository: redis
-        tag: "7.2.1"
+        tag: "7.2.2"
       enabled: true
       hostname: ""
       port: 6379