rename files, rm fmt-check, check-workspace on gha

.github/workflows/check-workspace.yml

@@ -6,16 +6,18 @@ on:
 
 jobs:
   check-workspace:
-    runs-on: ubuntu-latest
+    runs-on: arc-runners-polkadot-sdk
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.0 (22. Sep 2023)
 
       - name: install python deps
-        run: pip3 install toml
+        run: |
+          sudo apt-get update && sudo apt-get install -y python3-pip python3
+          pip3 install toml
 
       - name: check integrity
         run: >
-            python3 .github/scripts/check-workspace.py .
-            --exclude
-            "substrate/frame/contracts/fixtures/build"
-            "substrate/frame/contracts/fixtures/contracts/common"
+          python3 .github/scripts/check-workspace.py .
+          --exclude
+          "substrate/frame/contracts/fixtures/build"
+          "substrate/frame/contracts/fixtures/contracts/common"