build(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
             target: aarch64-apple-darwin
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - run: ./scripts/install-protobuf.sh
         shell: bash
@@ -62,7 +62,7 @@ jobs:
     timeout-minutes: 20
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: ./scripts/install-protobuf.sh
         shell: bash
       - run: cargo check --examples --tests -p containerd-shim -p containerd-shim-protos -p containerd-client
@@ -85,7 +85,7 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: ./scripts/install-protobuf.sh
         shell: bash
       - run: |
@@ -111,7 +111,7 @@ jobs:
     timeout-minutes: 15
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: ./scripts/install-protobuf.sh
         shell: bash
       - run: cargo build --all-features --timings
@@ -127,7 +127,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: EmbarkStudios/cargo-deny-action@v2
 
   linux-integration:
@@ -142,7 +142,7 @@ jobs:
 
     steps:
       - name: Checkout extensions
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download containerd archive
         env:
@@ -161,7 +161,7 @@ jobs:
           tar -xf containerd.tar.gz -C $HOME/.local
 
       - name: Checkout containerd
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: containerd/containerd
           path: src/github.com/containerd/containerd
@@ -201,7 +201,7 @@ jobs:
 
     steps:
       - name: Checkout extensions
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - run: ./scripts/install-protobuf.sh
         shell: bash
 

.github/workflows/cover.yml

@@ -15,7 +15,7 @@ jobs:
       statuses: write
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - run: |
           sudo apt-get install protobuf-compiler

.github/workflows/publish.yml

@@ -42,7 +42,7 @@ jobs:
       CARGO_FILE: "crates/${{ inputs.crate }}/Cargo.toml"
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Extract package version
         id: extract_version