Bump actions/checkout from 6 to 7 (#63)

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)

...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pr.yml

@@ -11,7 +11,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_VERSION }}
@@ -35,6 +35,6 @@ jobs:
           tar -xvf cargo-binstall-x86_64-unknown-linux-musl.tgz
       - name: install cargo-tarpaulin
         run: ./cargo-binstall --no-confirm cargo-tarpaulin
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: verify coverage
         run: cargo tarpaulin --fail-under 50

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_VERSION }}
@@ -45,7 +45,7 @@ jobs:
     env:
       TARGET: ${{ matrix.target }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_VERSION }}
@@ -68,7 +68,7 @@ jobs:
     env:
       TARGET: x86_64-pc-windows-msvc
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_VERSION }}