CI: Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/cross-plaform-build.yml

@@ -19,7 +19,7 @@ jobs:
         # macos-15-intel is an intel runner, macos-14 is apple silicon
         os: [ubuntu-latest, macos-15-intel, macos-14, windows-latest]
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: Configure
@@ -76,7 +76,7 @@ jobs:
               mingw-w64-clang-x86_64-cmake
               mingw-w64-clang-x86_64-ninja
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
       - uses: msys2/setup-msys2@v2

.github/workflows/publish-pypi.yml

@@ -64,7 +64,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           submodules: recursive
@@ -116,7 +116,7 @@ jobs:
     name: Build source distribution
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
       - name: Build sdist

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
     outputs:
       version: ${{ steps.meta.outputs.version }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
           ref: ${{ github.ref }}
@@ -83,7 +83,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-15-intel, macos-14, windows-latest]
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.ref }}
           submodules: recursive
@@ -142,7 +142,7 @@ jobs:
       PIP_DISABLE_PIP_VERSION_CHECK: "1"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           ref: ${{ github.ref }}
@@ -184,7 +184,7 @@ jobs:
     needs: [preflight, ci]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.ref }}
           submodules: recursive
@@ -203,7 +203,7 @@ jobs:
     needs: [preflight, ci]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.ref }}
           submodules: recursive
@@ -222,7 +222,7 @@ jobs:
       PLATFORMIO_AUTH_TOKEN: ${{ secrets.PLATFORMIO_AUTH_TOKEN }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           ref: ${{ github.ref }}
           submodules: recursive

.github/workflows/reusable-ci.yml

@@ -13,7 +13,7 @@ jobs:
   Changelog:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: Validate changelog files
@@ -22,7 +22,7 @@ jobs:
   CmakeBuild:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: Configure
@@ -39,7 +39,7 @@ jobs:
   MakeBuild:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: configure
@@ -52,7 +52,7 @@ jobs:
   DoxygenCheck:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: Install Doxygen
@@ -67,7 +67,7 @@ jobs:
   Test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: Configure
@@ -78,7 +78,7 @@ jobs:
   CheckPatch:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         submodules: recursive
     - name: ClangFormatCheck
@@ -89,7 +89,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: recursive
       - name: Install pypa/build
@@ -106,7 +106,7 @@ jobs:
     name: PyTest
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
       - uses: actions/setup-python@v6
@@ -123,7 +123,7 @@ jobs:
           - examples/platformio/cp.ino
           - examples/platformio/pd.ino
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
       - uses: actions/cache@v5
@@ -150,7 +150,7 @@ jobs:
     name: Windows MSVC
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           submodules: recursive
       - name: Configure