Simplify and update github workflows

Author: jasongrout

.github/workflows/main.yml

@@ -20,32 +20,24 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
-    - name: Setup conda
-      uses: conda-incubator/setup-miniconda@v2
+    - name: Install node
+      uses: actions/setup-node@v3
       with:
-        mamba-version: "*"
-        channels: conda-forge
+        node-version: '16'
+        cache: 'yarn'
 
-    - name: Mamba install dependencies
-      shell: bash -l {0}
-      run: mamba install python=${{ matrix.python-version }} pip yarn ipywidgets=7.6 jupyterlab=3 pytest nbval
-
-    - name: Install sidecar
-      shell: bash -l {0}
-      run: pip install -ve .
-      env: 
-        # To fix an issue with webpack and openssl3 https://stackoverflow.com/questions/69692842/error-message-error0308010cdigital-envelope-routinesunsupported
-        NODE_OPTIONS: "--openssl-legacy-provider"
+    - name: Install Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+        cache: 'pip'
+        cache-dependency-path: setup.py
 
-    - name: Check installation files
-      shell: bash -l {0}
-      run: |
-        echo $CONDA_PREFIX
-        ls $CONDA_PREFIX/share/jupyter/labextensions/@jupyter-widgets/
-        test -d $CONDA_PREFIX/share/jupyter/labextensions/@jupyter-widgets/jupyterlab-sidecar
-        test -f $CONDA_PREFIX/share/jupyter/labextensions/@jupyter-widgets/jupyterlab-sidecar/package.json
+    - run: pip install jupyterlab pytest nbval jupyter_packaging
+    - run: pip install -ve .
+    - run: jupyter labextension develop . --overwrite
 
     - name: Check labextension
       shell: bash -l {0}

.github/workflows/release.yml

@@ -13,16 +13,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install node
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@v3
       with:
-        node-version: '14.x'
-        registry-url: 'https://registry.npmjs.org'
+        node-version: '16'
 
     - name: Install Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.x'