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

Author: renovate[bot]

.github/workflows/publish_on_pypi.yml

@@ -18,7 +18,7 @@ jobs:
       patch_version: ${{ steps.check.outputs.patch_version }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0
@@ -64,7 +64,7 @@ jobs:
       id-token: write
       contents: write
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0

.github/workflows/run-formatter.yml

@@ -17,7 +17,7 @@ jobs:
   black:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0

.github/workflows/run-linter.yml

@@ -14,7 +14,7 @@ jobs:
   ruff:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0

.github/workflows/run-tests.yml

@@ -18,7 +18,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           ref: ${{ github.head_ref }}
           fetch-depth: 0