Update checkout action as previous v4 was deprecated.

Author: nyamatongwe

.github/workflows/build-check-macos.yml

@@ -12,7 +12,7 @@ jobs:
                 cpp_compiler: [clang++]
 
         steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - name: Install Scintilla source
           run: |
               (cd .. && wget --no-verbose https://www.scintilla.org/scintilla500.zip)

.github/workflows/build-check-win32.yml

@@ -16,7 +16,7 @@ jobs:
         env:
           TEST: ${{ matrix.arch == 'amd64' && 'test' || '' }}
         steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - name: Preparing nmake
           uses: ilammy/msvc-dev-cmd@v1
           with:

.github/workflows/build-check.yml

@@ -12,7 +12,7 @@ jobs:
                 cpp_compiler: [g++, clang++]
 
         steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - name: Install Scintilla source
           run: |
               (cd .. && wget --no-verbose https://www.scintilla.org/scintilla500.zip)