GH Actions cleanup

Author: peter-lyons-kehl

.github/workflows/main.yml

@@ -7,16 +7,10 @@ on:
 jobs:
   validate-version:
     runs-on: rust:1.86
-    runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Install Rust 1.86
-        run: |
-          rustup toolchain install 1.86 --profile minimal
-          rustup default 1.86
-
       - name: Run pre-commit
         run: ./pre-commit
         shell: bash