ci(deps): Bump actions/checkout from 4 to 7

.github/workflows/auto-tag-on-version-bump.yml

@@ -40,7 +40,7 @@ jobs:
   tag:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           # Need full history so `git tag` sees existing tags and
           # `git push origin <tag>` works against the remote.

.github/workflows/build-release.yml

@@ -38,7 +38,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           # When triggered by push, github.ref already points at the
           # tag. When triggered by repository_dispatch, github.ref is
@@ -125,7 +125,7 @@ jobs:
       # can read CHANGELOG.md. The other release steps don't need the
       # working copy, but adding checkout at the top keeps the job
       # idiomatic and lets future steps reference any repo file.
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Download all artifacts
         uses: actions/download-artifact@v4

.github/workflows/dco.yml

@@ -12,7 +12,7 @@ jobs:
     name: Sign-off check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
 

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -55,7 +55,7 @@ jobs:
     name: Headless install (no customtkinter)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Set up Python 3.13
         uses: actions/setup-python@v6