Restore checkout v3 and not use v4

Author: ckormanyos

.github/workflows/ci.yml

@@ -278,7 +278,7 @@ jobs:
                 fi
             fi
             git config --global pack.threads 0
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
 
       - name: Install packages
         if: matrix.install
@@ -523,7 +523,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
 
       - name: Install packages
         if: matrix.install
@@ -571,7 +571,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
 
       - name: Install packages
         if: matrix.install
@@ -629,7 +629,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
 
       - name: Install packages
         if: matrix.install