github: Expose the job properties (TAG and versions) in an artifact too

While we use the job outputs since 18bd3665ac,
having the info available in an artifact makes it easier to
fetch this in later separate workflows.

.github/workflows/build.yml

@@ -37,6 +37,7 @@ jobs:
           fi
           echo TAG=$TAG >> $GITHUB_OUTPUT
           cat $GITHUB_OUTPUT
+          cat $GITHUB_OUTPUT >> parameters.txt
       - name: Check latest version
         if: github.event_name == 'schedule'
         id: get-versions
@@ -45,6 +46,13 @@ jobs:
           echo MINGW_W64_VERSION=$(git ls-remote https://github.com/mingw-w64/mingw-w64.git | grep 'refs/heads/master$' | awk '{print $1}') >> $GITHUB_OUTPUT
           echo PYTHON_VERSION_MINGW=$(git ls-remote https://github.com/msys2-contrib/cpython-mingw.git | grep 'refs/heads/mingw-v3.10.11$' | awk '{print $1}') >> $GITHUB_OUTPUT
           cat $GITHUB_OUTPUT
+          cat $GITHUB_OUTPUT >> parameters.txt
+      - uses: actions/upload-artifact@v3
+        with:
+          name: parameters
+          path: |
+            parameters.txt
+          retention-days: 7
 
   # Build a cross compiler for Linux, targeting Windows.
   linux: