chore: update fossilize to 0.6.0 (V8 code cache support) (#1012)

Updates fossilize to v0.6.0 which automatically enables V8 code cache
for binaries matching the build host platform.

**Impact:** The linux-x64 binary (built on ubuntu-latest in CI) gets
~15% faster startup (~740ms vs ~870ms) from pre-compiled V8 bytecode.
Cross-compiled binaries (darwin, windows, linux-arm64) are unaffected —
code cache is CPU-architecture-specific.

See BYK/fossilize#8 for the fossilize change.

Author: BYK

package.json

@@ -32,7 +32,7 @@
     "consola": "^3.4.2",
     "esbuild": "^0.25.0",
     "fast-check": "^4.5.3",
-    "fossilize": "^0.5.0",
+    "fossilize": "^0.6.0",
     "hono": "^4.12.15",
     "http-cache-semantics": "^4.2.0",
     "ignore": "^7.0.5",