Update precommit.yml

Author: jagapiou

.github/workflows/precommit.yml

@@ -43,7 +43,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-
+        
       - name: install infrastructure (Linux)
         if: startsWith( matrix.cfg.os, 'ubuntu-' )
         run: |
@@ -57,11 +57,8 @@ jobs:
         if: startsWith( matrix.cfg.os, 'macos-' )
         run: |
           brew --version
-          brew install --overwrite python@${{ matrix.python-version }}
-          python3 --version
-          brew unlink python3
-          brew link --force python@${{ matrix.python-version }}
-          export PATH=/usr/local/bin:$PATH
+          brew install pyenv
+          pyenv install ${{ matrix.python-version }}
           python3 --version
           brew install python-packaging
           brew install numpy