chore: bump sharp to 0.34.5 (binary as optional dep, no postinstall download)

Rebased onto test/resolver-image-snapshots. Keeps only the sharp
dependency bump and the resize() return-type adaptation; test/snapshot
changes are dropped since the new image-snapshot test helper handles
them.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: tony8713

package.json

@@ -42,7 +42,7 @@
     "node-fetch": "v2.7.0",
     "nodemon": "^2.0.7",
     "redis": "^4.6.10",
-    "sharp": "^0.30.1",
+    "sharp": "^0.34.5",
     "starknet": "^6.11.0",
     "ts-node": "^10.8.1",
     "typescript": "^4.7.3"

src/utils.ts

@@ -45,7 +45,11 @@ export function sha256(str) {
   return createHash('sha256').update(str).digest('hex');
 }
 
-export async function resize(input, w, h, options?) {
+// sharp >=0.34 ships stricter bundled types that infer this chain as
+// `Promise<false | Buffer>`, which breaks callers expecting a Buffer. Keep the
+// historical (sharp 0.30) `Promise<any>` contract so the bump needs no other
+// type churn; the runtime value is always a Buffer.
+export async function resize(input, w, h, options?): Promise<any> {
   return sharp(input).resize(w, h, options).webp().toBuffer();
 }