Attempt to fix CI

Author: SzabolcsGergely

.github/workflows/main.yml

@@ -55,7 +55,7 @@ jobs:
       - name: Build target 'pybind11_mkdoc'
         run: cmake --build build --target pybind11_mkdoc --parallel 4
       - name: Upload docstring artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: docstrings
           path: docstrings/
@@ -169,7 +169,7 @@ jobs:
           mkdir -p wheelhouse/audited/
           for whl in wheelhouse/preaudited/*linux_armv6l*.whl; do cp "$whl" wheelhouse/audited/$(basename $whl); done
       - name: Archive wheel artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: audited-wheels
           path: wheelhouse/audited/
@@ -227,7 +227,7 @@ jobs:
       - name: Building wheels
         run: python -m pip wheel . -w ./wheelhouse/audited/ --verbose
       - name: Archive wheel artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: audited-wheels
           path: wheelhouse/audited/
@@ -288,7 +288,7 @@ jobs:
       - name: Auditing wheels
         run: ci/repair-whl-macos.sh `pwd`/wheelhouse/* `pwd`/wheelhouse/audited
       - name: Archive wheel artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: audited-wheels
           path: wheelhouse/audited/
@@ -361,7 +361,7 @@ jobs:
       - name: Audit wheels
         run: for whl in wheelhouse/*.whl; do auditwheel repair "$whl" --plat $PLAT -w wheelhouse/audited/; done
       - name: Archive wheel artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: audited-wheels
           path: wheelhouse/audited/
@@ -427,7 +427,7 @@ jobs:
       - name: Auditing wheels
         run: for whl in wheelhouse/*.whl; do auditwheel repair "$whl" --plat $PLAT -w wheelhouse/audited/; done
       - name: Archive wheel artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: audited-wheels
           path: wheelhouse/audited/