fix: correct checkout to v4 and add archive: false to fix double-zip

- actions/checkout@v6 does not exist; correct to @v4
- Add archive: false to all actions/upload-artifact@v7 steps so .zip
  and .7z files are uploaded directly without being wrapped in an
  extra zip container (fixes the double-zip problem described in
  #2725 and #2805)

Agent-Logs-Url: https://github.com/cmderdev/cmder/sessions/1d806690-a6f7-49d1-bef5-cefe50fc371e

Co-authored-by: DRSDavidSoft <4673812+DRSDavidSoft@users.noreply.github.com>

Author: Copilot

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
       discussions: write
     steps:
     - name: Check out repository code (Action from GitHub)
-      uses: actions/checkout@v6
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -101,25 +101,29 @@ jobs:
       with:
         path: build/cmder.zip
         name: cmder.zip
+        archive: false
         if-no-files-found: error
 
     - name: Upload artifact (cmder.7z)
       uses: actions/upload-artifact@v7
       with:
         path: build/cmder.7z
         name: cmder.7z
+        archive: false
 
     - name: Upload artifact (cmder_mini.zip)
       uses: actions/upload-artifact@v7
       with:
         path: build/cmder_mini.zip
         name: cmder_mini.zip
+        archive: false
 
     - name: Upload artifact (hashes.txt)
       uses: actions/upload-artifact@v7
       with:
         path: build/hashes.txt
         name: hashes.txt
+        archive: false
 
     - name: Summary - Artifacts uploaded
       if: success()