Replaced built-in binary cache of vcpkg to actions/cache

```
%VCPKG_BINARY_SOURCES%: warning: The 'x-gha' binary caching backend has been removed. Consider using a NuGet-based binary caching provider instead, see extended documentation at https://learn.microsoft.com/vcpkg/users/binarycaching?WT.mc_id=vcpkg_inproduct_cli.
  on expression: clear;x-gha,readwrite
```

Author: hsbt

.github/workflows/windows.yml

@@ -96,13 +96,6 @@ jobs:
           windows-toolchain: none
         if: ${{ matrix.os != '2025' }}
 
-      - name: Export GitHub Actions cache environment variables
-        uses: actions/github-script@v7
-        with:
-          script: |
-            core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
-            core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');
-
       - name: Install libraries with scoop
         run: |
           iex "& {$(irm get.scoop.sh)} -RunAsAdmin"
@@ -153,12 +146,16 @@ jobs:
         run: Get-Volume
         shell: pwsh
 
+      - name: Restore vcpkg artifact
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        with:
+          path: ${{ github.workspace }}/src/vcpkg_installed
+          key: windows-${{ matrix.os }}-vcpkg-${{ hashFiles('src/vcpkg.json') }}
+
       - name: Install libraries with vcpkg
         run: |
           vcpkg install
         working-directory: src
-        env:
-          VCPKG_BINARY_SOURCES: "clear;x-gha,readwrite"
 
       # TODO: We should use `../src` instead of `D:/a/ruby/ruby/src`
       - name: Configure