[Build] Update build scripts to use non-deprecated actions tooling

Author: tonhuisman

.github/workflows/Build.yml

@@ -36,19 +36,19 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Cache pip
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
         restore-keys: |
           ${{ runner.os }}-pip-
     - name: Cache PlatformIO
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ~/.platformio
         key: ${{ runner.os }}-${{ hashFiles('**/platformio.ini') }}
     - name: Cache PlatformIO build
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: .pio
         key: pio-${{ runner.os }}-${{ matrix.project }}