Use setup-plone branch maurits-fixes.

This is for testing plone/setup-plone#4
Not sure if this is the correct spelling.

On that branch we use the setuptools version that is pinned in the constraints of Plone, which should be fine for both 6.0 and 6.1, also on Python 3.12.

.github/workflows/main.yml

@@ -24,12 +24,10 @@ jobs:
 
       - name: Setup Plone ${{ matrix.plone }} with Python ${{ matrix.python }}
         id: setup
-        uses: plone/setup-plone@v2.0.0
+        uses: plone/setup-plone@maurits-fixes
         with:
           python-version: ${{ matrix.python }}
           plone-version: ${{ matrix.plone }}
-          setuptools-version: 69.5.1
-          additional-eggs: 'setuptools'
       - name: Install package
         run: |
           make install