ci(slither): run only on solidity files changed

.github/workflows/slither.yml

@@ -6,13 +6,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            solidity:
+              - 'ethereum-bridge-contracts/**'
 
       - name: Set .env
+        if: steps.filter.outputs.solidity == 'true'
         working-directory: ethereum-bridge-contracts
         run: cp env.template .env
 
       - name: Run Slither
         uses: crytic/slither-action@v0.3.0
+        if: steps.filter.outputs.solidity == 'true'
         id: slither
         with:
           fail-on: all
@@ -22,12 +30,13 @@ jobs:
           slither-args: --checklist --markdown-root ${{ github.server_url }}/${{ github.repository }}/blob/${{ github.sha }}/
 
       - name: Push SARIF to DefectDojo
+        if: (success() || failure()) && steps.filter.outputs.solidity == 'true'
         # TODO: push to DefectDojo
         run: ls results.sarif
 
       - name: Create/update checklist as PR comment
         uses: actions/github-script@v6
-        if: github.event_name == 'push'
+        if: (success() || failure()) && github.event_name == 'push' && steps.filter.outputs.solidity == 'true'
         env:
           REPORT: ${{ steps.slither.outputs.stdout }}
         with: