ci: install zig into /usr/local/bin with symlink

.forgejo/workflows/release.yml

@@ -22,8 +22,10 @@ jobs:
 
       - name: Install zig
         run: |
-          curl -fsSL https://ziglang.org/download/0.13.0/zig-linux-x86_64-0.13.0.tar.xz | \
-            tar -xJ -C /usr/local --strip-components=1
+          curl -fsSL https://ziglang.org/download/0.13.0/zig-linux-x86_64-0.13.0.tar.xz -o /tmp/zig.tar.xz
+          mkdir -p /usr/local/zig
+          tar -xJf /tmp/zig.tar.xz -C /usr/local/zig --strip-components=1
+          ln -sf /usr/local/zig/zig /usr/local/bin/zig
           zig version
 
       - name: Setup SSH