.github/labeler: add governance label automatically

We don't have anything CI wise to enforce proper reviews for governance
changes but we can easily label a PR so that should raise more
awareness.

Signed-off-by: Paul Holzinger <[email protected]>

Author: Luap99

.github/labeler.yml

@@ -6,3 +6,8 @@ kind/api-change:
 machine:
   - changed-files:
     - any-glob-to-any-file: pkg/machine/**
+governance:
+  - changed-files:
+    - any-glob-to-any-file: OWNERS
+    - any-glob-to-any-file: MAINTAINERS.md
+    - any-glob-to-any-file: GOVERNANCE.md