ci: bump actions/checkout from 3 to 4

.github/workflows/build_documentation.yaml

@@ -36,7 +36,7 @@ jobs:
     name: Check that all classes are documented in the menu-a-la-carte example
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -84,7 +84,7 @@ jobs:
 
     steps:
       # check out the ModularSensors repo
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           path: code_docs/ModularSensors
 
@@ -124,7 +124,7 @@ jobs:
 
       # check out my fork of m.css, for processing Doxygen output
       - name: Checkout m.css
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Repository name with owner. For example, actions/checkout
           repository: SRGDamia1/m.css

.github/workflows/build_examples.yaml

@@ -17,7 +17,7 @@ jobs:
       pio_job_matrix: ${{ steps.py_matrix.outputs.pio_job_matrix }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -49,7 +49,7 @@ jobs:
         job_info: ${{ fromJSON(needs.generate_matrix.outputs.arduino_job_matrix) }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set environment variable for library installation source
         run: |
@@ -127,7 +127,7 @@ jobs:
         job_info: ${{ fromJSON(needs.generate_matrix.outputs.pio_job_matrix) }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set environment variable for library installation source
         run: |

.github/workflows/build_examples_platformio.yaml

@@ -32,7 +32,7 @@ jobs:
         pio_environment: [mayfly, mega, arduino_zero, adafruit_feather_m0, autonomo]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set environment variable for library installation source
         run: |

.github/workflows/build_menu.yaml

@@ -204,7 +204,7 @@ jobs:
             sensorFlag: NO_SENSORS
             publisherFlag: BUILD_PUB_UBIDOTS_PUBLISHER
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set environment variable for library installation source
         run: |

.github/workflows/changelog_reminder.yaml

@@ -5,7 +5,7 @@ jobs:
     name: Changelog Reminder
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
 

.github/workflows/prepare_release.yaml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set environment variable for current library version
         run: |

.github/workflows/verify_library_json.yaml

@@ -9,7 +9,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/[email protected]

.github/workflows/verify_library_structure.yaml

@@ -14,7 +14,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4
@@ -60,7 +60,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Run Arduino-Lint to verify the library structure and syntax for the Arduino IDE
         id: validate_library