Actions node 12 => node 16 (#162)

* updated .yml files

* updates

Author: Jay-sanjay

.github/workflows/CleanPreview.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes

.github/workflows/Deploy.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         persist-credentials: false
     # NOTE: Python is necessary for the pre-rendering (minification) step
@@ -24,7 +24,7 @@ jobs:
     # packages such as PyPlot.
     # - run: pip install matplotlib
     - name: Install Julia
-      uses: julia-actions/setup-julia@v1
+      uses: julia-actions/setup-julia@latest
     # NOTE
     #   The steps below ensure that NodeJS and Franklin are loaded then it
     #   installs highlight.js which is needed for the prerendering step