Trim the browser targets list in the transpilation config

I only use Safari (and sometimes Firefox, but not much), and I do not
particularly care for visitors to my instance, so this is again an attempt
at allowing the compiler to be more reckless wrt polyfilling to minimize
generated code.

packages/client/vite.config.ts

@@ -47,10 +47,8 @@ export default defineConfig(({ command, mode }) => {
 
 		build: {
 			target: [
-				'chrome100',
-				'firefox100',
-				'safari15',
-				'es2017',
+				'firefox103',
+				'safari16',
 			],
 			manifest: 'manifest.json',
 			rollupOptions: {