chore(deps): 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/ci.yml

@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install nightly toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -86,7 +86,7 @@ jobs:
           - nightly
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -109,7 +109,7 @@ jobs:
       - doc
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -131,7 +131,7 @@ jobs:
       - doc
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -149,7 +149,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Get current MSRV from Cargo.toml
         id: current_msrv
         run: |
@@ -173,7 +173,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:

.github/workflows/coverage.yml

@@ -19,7 +19,7 @@ jobs:
       CARGO_TERM_COLOR: always
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with: