install 7zip manually try fix

.github/workflows/windows-vcpkg.yml

@@ -59,12 +59,16 @@ jobs:
       with:
         key: windows
 
+    - name: Install unzip (in case not installed)
+      shell: bash
+      run: sudo apt-get install -y unzip
+
     - name: Install 7-Zip manually
       shell: bash
       run: |
         wget https://www.7-zip.org/a/7z2107-extra.7z -O 7zip.7z
         mkdir 7zip
-        7za x 7zip.7z -o7zip
+        unzip 7zip.7z -d 7zip
         sudo cp 7zip/7za /usr/local/bin/
         rm -rf 7zip