update rum

rum/build.mjs

@@ -0,0 +1,15 @@
+import { build } from 'esbuild';
+import { fileURLToPath } from 'node:url';
+
+await build({
+  absWorkingDir: fileURLToPath(new URL('.', import.meta.url)),
+  entryPoints: ['src/otel-rum.ts', 'src/otel-todo.ts'],
+  outdir: '../static',
+  bundle: true,
+  format: 'iife',
+  platform: 'browser',
+  target: ['es2020'],
+  minify: true,
+  sourcemap: 'external',
+  logLevel: 'info',
+});