build(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/run_tests.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Cache Cargo registry
         uses: actions/cache@v5

.github/workflows/rust-lint.yml

@@ -16,7 +16,7 @@ jobs:
     name: cargo clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/rust_check.yml

@@ -16,7 +16,7 @@ jobs:
     name: cargo check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/rust_coverage.yaml

@@ -14,7 +14,7 @@ jobs:
     env:
       CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Install Rust
         run: rustup update stable

.github/workflows/rust_deps.yml

@@ -16,7 +16,7 @@ jobs:
     name: cargo machete
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/rust_fmt.yml

@@ -16,7 +16,7 @@ jobs:
     name: cargo fmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable

.github/workflows/rust_miri.yml

@@ -64,7 +64,7 @@ jobs:
           - crate: deep_causality_uncertain
             extra_flags: -Zmiri-disable-isolation       # open() in tests/mod.rs binary
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Install nightly toolchain with Miri
         run: |

.github/workflows/rust_release_plz.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0 #  necessary to determine the next version and build the changelog.
       - name: Install Rust toolchain