Upgrade actions/checkout to v4

Author: ccmywish

.github/workflows/build-on-Linux-x64.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-16>
 #
 # Build chsrc on Linux (x64) and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Build
       run: |

.github/workflows/build-on-Windows.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-16>
 #
 # Build chsrc on Windows and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -26,7 +26,7 @@ jobs:
     steps:
 
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install x64 gcc
       uses: msys2/setup-msys2@v2

.github/workflows/build-on-macOS.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-15>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-16>
 #
 # Build chsrc on macOS and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Build for AArch64
       run: |
@@ -46,7 +46,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Build for x64
       run: |