Work around symlink issue in Mac OS GitHub workflow

Follow-up to commit 98ff4db (Fix Mac OS GitHub workflow, 2023-04-11).

See actions/setup-python#577 for more details.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

.github/workflows/make.yml

@@ -30,8 +30,8 @@ jobs:
       if: matrix.os == 'ubuntu-latest'
     - name: Install dependencies (MacOS)
       run: |
-        brew update
         brew install --overwrite python
+        brew update
         brew install automake
         brew install asciidoc
         brew install gettext