chore(deps): update ghcr.io/github/github-mcp-server docker tag to v0.20.2 (#373)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

registry/github/spec.yaml

@@ -67,7 +67,7 @@ tags:
   - search
   - update
   - issues
-image: ghcr.io/github/github-mcp-server:v0.20.1
+image: ghcr.io/github/github-mcp-server:v0.20.2
 permissions:
   network:
     outbound: