Update workflows to use node 14 (#210)

Author: kddejong

.github/workflows/branch-pr-release.yaml

@@ -17,7 +17,7 @@ jobs:
     - name: Setup Node.js
       uses: actions/setup-node@v1
       with:
-        node-version: 10.x
+        node-version: 14.x
     - name: Set up Python
       uses: actions/setup-python@v1
       with:

.github/workflows/publish.yaml

@@ -13,7 +13,7 @@ jobs:
     - name: Setup Node.js
       uses: actions/setup-node@v1
       with:
-        node-version: 10.x
+        node-version: 14.x
     - name: Setup NPM
       run: |
         npm install