chore(deps): pin ghcr.io/szinn/s3-cdn docker tag to 6f50fe5 (#3334)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [ghcr.io/szinn/s3-cdn](https://togithub.com/szinn/s3-cdn) | pinDigest
| -> `6f50fe5` |

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kubernetes/main/apps/security/authentik/cdn/helm-release.yaml

@@ -35,7 +35,7 @@ spec:
           main:
             image:
               repository: ghcr.io/szinn/s3-cdn
-              tag: 0.2.0
+              tag: 0.2.0@sha256:6f50fe5ee07cfe0859f3cc0e4af2ca599cc86dc0e1c56deaf905b1bf77effe1a
               pullPolicy: Always
             args:
               - server