Bump actions/checkout from 2 to 6 (#149)

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 121a8d0..53dd0ef 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@
     env:
       USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Execute Tests
       shell: bash
       env:
@@ -47,7 +47,7 @@
     env:
       USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Test
       shell: bash
       working-directory: examples/simple
@@ -63,7 +63,7 @@
     env:
       USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Test
       shell: bash
       working-directory: examples/specify_assets
@@ -79,7 +79,7 @@
     env:
       USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Test
       shell: bash
       working-directory: examples/bzlmod
@@ -95,7 +95,7 @@
     env:
       USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Test
       shell: bash
       working-directory: examples/bzlmod_specify_assets

.github/workflows/create_release.yml

diff --git a/.github/workflows/create_release.yml b/.github/workflows/create_release.yml
index cc9af4f..6b758b5 100644
--- a/.github/workflows/create_release.yml
+++ b/.github/workflows/create_release.yml
@@ -13,7 +13,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
       - name: Create Release
         run: |
           set -euo pipefail