Cleanup git checkout actions

We now fetch only the current commit for jobs that don't need the git
history. For the Prerelease job, we don't checkout the code at all.

closes https://github.com/official-stockfish/Stockfish/pull/4779

No functional change

.github/workflows/stockfish.yml

@@ -16,10 +16,6 @@ jobs:
     if: github.ref == 'refs/heads/master'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
       # returns null if no pre-release exists
       - name: Get Commit SHA of Latest Pre-release
         run: |

.github/workflows/stockfish_compile_test.yml

@@ -52,8 +52,6 @@ jobs:
         shell: ${{ matrix.config.shell }}
     steps:
       - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
 
       - name: Setup msys and install required packages
         if: runner.os == 'Windows'

.github/workflows/stockfish_sanitizers.yml

@@ -36,8 +36,6 @@ jobs:
         shell: ${{ matrix.config.shell }}
     steps:
       - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
 
       - name: Download required linux packages
         run: |