update workflows

.github/workflows/clang-format-check.yaml

@@ -5,6 +5,6 @@ jobs:
     name: Formatting Check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Run clang-format style check for C/C++/Protobuf programs.
       uses: jidicula/[email protected]

.github/workflows/copyright-header-check.yaml

@@ -5,9 +5,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install license-header-checker
         run: curl -s https://raw.githubusercontent.com/lluissm/license-header-checker/master/install.sh | bash
       - name: Run license check
         run: ./bin/license-header-checker -a -r -i git,.github,.pio ./util/license_header.txt . h cpp && [[ -z `git status -s` ]]
-#        run: ./bin/license-header-checker -a -r -i git,.github,.pio ./util/license_header.txt . h cpp

.github/workflows/platformio-tests.yaml

@@ -4,8 +4,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cache/pip