Quick CI fix (#94)

Author: Absolucy

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
             runner: windows-latest
             target: i686-pc-windows-msvc
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Rust toolchain
         uses: actions-rust-lang/setup-rust-toolchain@v1
@@ -43,7 +43,7 @@ jobs:
           PKG_CONFIG_ALLOW_CROSS: 1
 
       - name: Upload debug-server (Windows)
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: ${{ matrix.os.name == 'win' }}
         with:
           name: debug-server-windows