GitHub: Install nvm v0.39.7 (Temporary workaround for moodlehq/moodle-plugin-ci#309)

Author: semteacher

.github/workflows/moodle-plugin-ci.yml

@@ -117,7 +117,9 @@ jobs:
           echo $(cd ci/bin; pwd) >> $GITHUB_PATH
           echo $(cd ci/vendor/bin; pwd) >> $GITHUB_PATH
           sudo locale-gen en_AU.UTF-8
-          echo "NVM_DIR=$HOME/.nvm" >> $GITHUB_ENV
+          #echo "NVM_DIR=$HOME/.nvm" >> $GITHUB_ENV
+          # Install nvm v0.39.7 (Temporary workaround for https://github.com/moodlehq/moodle-plugin-ci/issues/309).
+          curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
 
       - name: Install moodle-plugin-ci
         run: |