chore(deps): update actionshub/chef-install action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -83,7 +83,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v6
       - name: Install Chef
-        uses: actionshub/chef-install@3.0.1
+        uses: actionshub/chef-install@6.0.0
       - name: Dokken
         uses: actionshub/test-kitchen@3.0.0
         env:
@@ -108,7 +108,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v6
       - name: Install Chef
-        uses: actionshub/chef-install@3.0.1
+        uses: actionshub/chef-install@6.0.0
       - name: Dokken
         uses: actionshub/test-kitchen@3.0.0
         env:
@@ -142,7 +142,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v6
       - name: Install Chef
-        uses: actionshub/chef-install@3.0.1
+        uses: actionshub/chef-install@6.0.0
       - name: Dokken
         uses: actionshub/test-kitchen@3.0.0
         env: