github: do not warn about script location

Author: ahayzen-kdab

.github/workflows/github-cxx-qt-tests.yml

@@ -496,6 +496,14 @@ jobs:
       run: |
         pip install --user --break-system-packages clang-format==18.1.8
         test -x ${{ matrix.clang_format_path }}
+      env:
+        # Do not warn when scripts are not within PATH (eg on macOS Qt 6 runner)
+        #
+        # Set this via env rather than --no-warn-script-location incase
+        # older pip versions do not have this option
+        #
+        # Note that the env var is for a negative option so false means off
+        PIP_NO_WARN_SCRIPT_LOCATION: false
 
     # Version info found using https://ddalcino.github.io/aqt-list-server/
     - name: "Install Qt"