select Zig version in CI based on build.zig.zon

Author: Techatrix

.github/workflows/ci.yaml

@@ -14,7 +14,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        zig-version: [0.15.1]
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -23,8 +22,6 @@ jobs:
 
       - name: Setup Zig
         uses: mlugg/setup-zig@v2
-        with:
-          version: ${{ matrix.zig-version }}
 
       - name: Check Formatting
         run: zig fmt --ast-check --check .