fix: configure release-please to auto-update Docker image versions (#49)

Add x-release-please-version markers to docker-compose.yml and k8s/deployment.yaml
to enable automatic version updates during releases. Include k8s/deployment.yaml in
release-please extra-files configuration. Update both files to current v0.4.1.

This resolves the infinite release cycle where version references in config files
remained outdated after releases, creating perpetual version mismatches.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude <[email protected]>

Author: MoonBoi9001

.release-please-config.json

@@ -7,7 +7,8 @@
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "extra-files": [
-        "docker-compose.yml"
+        "docker-compose.yml",
+        "k8s/deployment.yaml"
       ]
     }
   },

docker-compose.yml

@@ -9,7 +9,7 @@ services:
     container_name: rewards-eligibility-oracle
 
     # Set the image name
-    image: ghcr.io/graphprotocol/rewards-eligibility-oracle:v0.4.0
+    image: ghcr.io/graphprotocol/rewards-eligibility-oracle:v0.4.1 # x-release-please-version
 
     volumes:
       # Mount data directory to store data