fix: use npx for tsc in CI so it works across all runtimes

pnpm exec fails when the matrix runtime is bun or deno without pnpm.

Author: thejackshelton

.github/workflows/ci.yml

@@ -50,7 +50,7 @@ jobs:
         run: vp lint
 
       - name: Type check
-        run: pnpm exec tsc --noEmit
+        run: npx tsc --noEmit
 
       - name: Build
         run: vp pack