Only run workflows when necessary (#4790)

* Run workflows only when necessary

* submod

* also run tests on yml change

* aba bab abab ababa

* give up

* give up 2

.github/workflows/validate-rsis.yml

@@ -1,6 +1,9 @@
 name: RSI Validator
 
-on: [pull_request]
+on:
+  pull_request: 
+    paths:
+      - '**.rsi/**'
 jobs:
   validate_rsis:
     name: Validate RSIs