feat: add find --version to tests

Required for ZMK unit tests.

Author: innovaker

.github/workflows/containers.yml

@@ -358,6 +358,8 @@ jobs:
         run: cmake --version
       - name: Test python
         run: python3 --version
+      - name: Test find
+        run: find --version
       - name: Test diff
         run: diff --version
       - name: Test west init