chore(deps): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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] <support@github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Setup go
         uses: actions/setup-go@v5
         with:
@@ -27,7 +27,7 @@ jobs:
     name: Tidy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Setup go
         uses: actions/setup-go@v5
         with:

.github/workflows/e2e-testing.yaml

@@ -69,7 +69,7 @@ jobs:
         id: go
 
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Download dependencies for interchaintest
         run: |
@@ -117,7 +117,7 @@ jobs:
         id: go
 
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: run test
         run: make ${{ matrix.test }}

.github/workflows/lint.yml

@@ -12,7 +12,7 @@ jobs:
     name: golangci-lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: technote-space/get-diff-action@v4
         with:

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1

.github/workflows/test.yml

@@ -35,7 +35,7 @@ jobs:
         with:
           go-version: "1.25"
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Unit Tests
         run: |