Update GitHub Actions to use actions/checkout@v6.0.0 for consistency across workflows

Author: rbeucher

.github/workflows/cd.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6.0.0
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -49,7 +49,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6.0.0
 
       - name: Derive Version
         id: ver

.github/workflows/ci.yml

@@ -3,8 +3,6 @@ name: CI
 on:
   pull_request:
     branches: [main]
-  push:
-    branches: [main]
   workflow_dispatch:
     inputs:
       test_suite:
@@ -21,7 +19,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5.0.0
+      - uses: actions/checkout@v6.0.0
       - uses: prefix-dev/setup-pixi@v0.9.3
         with:
           pixi-version: v0.39.5
@@ -34,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@v6.0.0
 
       - name: Setup pixi
         uses: prefix-dev/setup-pixi@v0.9.3

.github/workflows/full-tests.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v5.0.0
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd
 
       - name: Setup pixi
         uses: prefix-dev/setup-pixi@82d477f15f3a381dbcc8adc1206ce643fe110fb7 # v0.9.0