Update sous-chefs/.github action to v6 (#465)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ name: ci
 
 jobs:
   lint-unit:
-    uses: sous-chefs/.github/.github/workflows/lint-unit.yml@5.0.8
+    uses: sous-chefs/.github/.github/workflows/lint-unit.yml@6.0.0
     permissions:
       actions: write
       checks: write

.github/workflows/conventional-commits.yml

@@ -11,4 +11,4 @@ name: conventional-commits
 
 jobs:
   conventional-commits:
-    uses: sous-chefs/.github/.github/workflows/conventional-commits.yml@5.0.8
+    uses: sous-chefs/.github/.github/workflows/conventional-commits.yml@6.0.0

.github/workflows/prevent-file-change.yml

@@ -11,6 +11,6 @@ name: prevent-file-change
 
 jobs:
   prevent-file-change:
-    uses: sous-chefs/.github/.github/workflows/prevent-file-change.yml@5.0.8
+    uses: sous-chefs/.github/.github/workflows/prevent-file-change.yml@6.0.0
     secrets:
       token: ${{ secrets.GITHUB_TOKEN }}