Update Engine to 0.40.3.0, put yaml action back (#10600)

.github/workflows/validate-rgas.yml

@@ -10,7 +10,7 @@ jobs:
       run: git submodule update --init
     - name: Pull engine updates
       uses: space-wizards/submodule-dependency@v0.1.5
-    - uses:  wrexbe/yaml-schema-validator@aeb2aa16c9339d0c2cb799c2b959ae56a9c64727
+    - uses: PaulRitter/yaml-schema-validator@v1
       with:
         schema: RobustToolbox/Schemas/rga.yml
         path_pattern: .*attributions.ya?ml$