Update ubunutu-14.04 to Python 3.9.3

Exclude test results from badges

.github/workflows/src/build-test.yml

@@ -129,8 +129,8 @@ jobs:
         apt-get --allow-unauthenticated install -y curl g++ git make patch zlib1g-dev libssl-dev bsdmainutils dnsutils unzip
         # ubuntu-14.04 ca-certificates are out of date
         git config --global http.sslVerify false
-        curl -sS https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tar.xz | tar -xJ
-        cd Python-3.6.9
+        curl -sS https://www.python.org/ftp/python/3.9.3/Python-3.9.3.tar.xz | tar -xJ
+        cd Python-3.9.3
         ./configure
         make -j8
         make install
@@ -164,7 +164,7 @@ jobs:
     - name: make badges
       run: |
         # combine badges from all builds, exclude macos-11
-        ${{ github.workspace }}/Sandbox/make_badges.sh ${{ github.workspace }} ${{ runner.workspace }}/artifacts macos-11
+        ${{ github.workspace }}/Sandbox/make_badges.sh ${{ github.workspace }} ${{ runner.workspace }}/artifacts macos-11 ubuntu-14.04
 
         # force push to github onto an orphan 'badges' branch
         cd ${{ github.workspace }}