Bump actions/checkout from 5 to 6 (#25)

Author: dependabot[bot]

.github/workflows/rust.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - run: rustup component add rustfmt
     - uses: Swatinem/rust-cache@v2
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - run: rustup component add clippy
     - uses: Swatinem/rust-cache@v2
@@ -42,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - run: rustup install nightly --profile minimal
     - uses: Swatinem/rust-cache@v2
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - run: |
         rustup toolchain install nightly --profile minimal --component rust-src --component miri