Merge pull request #794 from OpenEVSE/dependabot/github_actions/actions/cache-4

Bump actions/cache from 3 to 4

Author: jeremypoulter

.github/workflows/build.yaml

@@ -77,15 +77,15 @@ jobs:
         submodules: recursive
 
     - name: Cache pip
-      uses: actions/cache@v3
+      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@v3
+      uses: actions/cache@v4
       with:
         path: ~/.platformio
         key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}