chore(deps): update actions/checkout action to v6 (#234)

Author: renovate[bot]

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       contents: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: ./.github/actions/setup
@@ -33,7 +33,7 @@ jobs:
       contents: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: ./.github/actions/setup
@@ -47,7 +47,7 @@ jobs:
       contents: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: ./.github/actions/setup

.github/workflows/claude-renovate-review.yml

@@ -22,7 +22,7 @@ jobs:
       contents: read
       pull-requests: write # required so Claude can comment on Renovate PRs
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: koki-develop/claude-renovate-review@e3b6fc8f6ce1460c17b70ad0e106ba774d4efc62 # v1.0.8

.github/workflows/github-actions-lint.yml

@@ -24,7 +24,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: koki-develop/github-actions-lint/actionlint@5ecd42b59803f14bfaa7ed0bfb8de8c1dc1b4c6d # v1.6.0
@@ -36,7 +36,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: koki-develop/github-actions-lint/ghalint@5ecd42b59803f14bfaa7ed0bfb8de8c1dc1b4c6d # v1.6.0
@@ -50,7 +50,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: koki-develop/github-actions-lint/zizmor@5ecd42b59803f14bfaa7ed0bfb8de8c1dc1b4c6d # v1.6.0

.github/workflows/release-please.yml

@@ -38,7 +38,7 @@ jobs:
     permissions:
       contents: write # for upload release assets
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 0
           persist-credentials: false

.github/workflows/update-demo.yml

@@ -14,7 +14,7 @@ jobs:
       pull-requests: write # needed to open the update pull request
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: ./.github/actions/setup

.github/workflows/update-docs.yml

@@ -20,7 +20,7 @@ jobs:
       contents: write # needed to commit generated documentation updates
       pull-requests: write # needed to open a PR with the doc changes
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: ./.github/actions/setup