Upgrade actions/checkout from 5 to 6 version (#17)

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/audit.yml

@@ -15,7 +15,7 @@ jobs:
   cargo-audit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: stable

.github/workflows/ci.yml

@@ -50,7 +50,7 @@ jobs:
   clippy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: stable
@@ -61,7 +61,7 @@ jobs:
   rustfmt:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: nightly
@@ -85,7 +85,7 @@ jobs:
           - into-regex
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: nightly
@@ -114,7 +114,7 @@ jobs:
           - parameter
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: nightly
@@ -132,7 +132,7 @@ jobs:
         os: ["ubuntu", "macOS", "windows"]
     runs-on: ${{ matrix.os }}-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: nightly
@@ -152,7 +152,7 @@ jobs:
         os: ["ubuntu", "macOS", "windows"]
     runs-on: ${{ matrix.os }}-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: ${{ matrix.toolchain }}
@@ -175,7 +175,7 @@ jobs:
   rustdoc:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: nightly
@@ -197,7 +197,7 @@ jobs:
     needs: ["release-github"]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: stable
@@ -219,7 +219,7 @@ jobs:
       - test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Parse release version
         id: release