[no ci] Update dependabot.yaml

Author: roflmuffin

.github/dependabot.yaml

@@ -6,7 +6,8 @@ updates:
     allow:
       - dependency-name: "libraries/hl2sdk-cs2"
       - dependency-name: "libraries/metamod-source"
+      - dependency-name: "libraries/Protobufs"
     schedule:
       interval: "daily"
     commit-message:
-      prefix: "chore(deps)"
+      prefix: "chore(deps)"