Update GitHub actions

Author: latchdevel

.github/workflows/BuildTest.yml

@@ -77,7 +77,7 @@ jobs:
     steps:
         # Clone repo using the checkout action.
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           submodules: recursive
 
@@ -117,7 +117,7 @@ jobs:
 
         # Upload binary files to artifacts
       - name: Upload compiled binaries to Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: "Binaries for ${{ matrix.config.name }}"
           path: |