build(frontend): pin typescript to 5.x and decode tgs stickers with pako toText

frontend/src/lib/components/media/TgsSticker.svelte

@@ -23,7 +23,7 @@
         ]);
         const response = await fetch(url);
         const bytes = new Uint8Array(await response.arrayBuffer());
-        const json = JSON.parse(pako.inflate(bytes, { to: "string" }));
+        const json = JSON.parse(pako.inflate(bytes, { toText: true }));
         if (!active) {
           return;
         }