Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/go.yaml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - id: toolchain
         run: echo "version=$(sed -ne '/^toolchain /s/^toolchain go//p' go.mod)" >> "$GITHUB_OUTPUT"
       - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - id: toolchain
         run: echo "version=$(sed -ne '/^toolchain /s/^toolchain go//p' go.mod)" >> "$GITHUB_OUTPUT"
       - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0
@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - id: toolchain
         run: echo "version=$(sed -ne '/^toolchain /s/^toolchain go//p' go.mod)" >> "$GITHUB_OUTPUT"
       - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00 # v6.0.0