workflows: Bump checkouts version

Author: ThomasHabets

.github/workflows/c-cpp.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: apt-get update
       run:  sudo apt-get update
     - name: Required dependencies

.github/workflows/macos.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Install dependencies
       run: brew install autoconf automake libnet
     - name: bootstrap

.github/workflows/openbsd.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Build on OpenBSD
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Test in OpenBSD
       id: test
       uses: vmactions/openbsd-vm@v1

.github/workflows/pedantic.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: apt-get update
         run:  sudo apt-get update
       - name: Install dependencies