Downgrade jsdom to version 11.11.0 (nightscout#7851)

* rollback compatibility issues for tests

Revert "Bump jsonwebtoken from 8.5.1 to 9.0.0 (nightscout#7787)"

This rolls back changes to node_modules via package-lock.json as a
result of new dependencies.  More work is needed before involving these
changes.  Without this rollback, the tests do consistently complete within
the allowed time in a reproducible way.

* Test Github Actions with jsdom 11.11.0

* Upgrade github actions as requested by the actions runner

* Lock generated using 6.14.18

* Upgrade actions/checkout@v2 to v3

* restore jsonwebtoken upgrade

Co-authored-by: Ben West <bewest@gmail.com>

.github/workflows/main.yml

@@ -21,10 +21,10 @@ jobs:
 
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
 
@@ -60,7 +60,7 @@ jobs:
           password: ${{ secrets.DOCKER_PASS }}
       - name: Clean git Checkout
         if: success()
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Build, tag and push the dev Docker image
         if: success() && github.ref == 'refs/heads/dev'
         uses: docker/build-push-action@v2