CI: updated to actions/checkout@v6

Author: frankmorgner

.github/workflows/ape.yml

@@ -23,7 +23,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - run: .github/build.sh ape
     - uses: actions/upload-artifact@v4
       with:
@@ -40,7 +40,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     needs: build
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/download-artifact@v5
       - run: .github/test.sh
 
@@ -53,6 +53,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     needs: build
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/download-artifact@v5
       - run: .github/test.bat

.github/workflows/coverity.yml

@@ -13,7 +13,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+    - uses: actions/checkout@@v6
     - run: .github/build.sh coverity
     - uses: vapier/coverity-scan-action@2dd9b03b1987669de7a6db4203ba44b76a636ce4 # v0.0.1
       with:

.github/workflows/macos.yml

@@ -23,5 +23,5 @@ jobs:
   build:
     runs-on: macos-14
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - run: .github/build.sh macos

.github/workflows/ubuntu.yml

@@ -23,7 +23,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - run: .github/build.sh ubuntu
     - uses: actions/upload-artifact@v4
       with: