replace console.log with nicelog (#1496)

This PR replaces our `console.log` with `nicelog` so that I can more
easily grep for errant console.logs.

### Change Type

- [x] `internal` — Any other changes that don't affect the published
package (will not publish a new version)

scripts/lib/exec.ts

@@ -1,4 +1,5 @@
 import { execFile } from 'child_process'
+import { nicelog } from './nicelog'
 
 type ExecOpts = {
 	pwd?: string
@@ -24,7 +25,7 @@ export async function exec(
 		env,
 	}: ExecOpts = {}
 ): Promise<string> {
-	console.log(`> $ ${command} ${args.join(' ')} (in ${pwd}))`)
+	nicelog(`> $ ${command} ${args.join(' ')} (in ${pwd}))`)
 	return new Promise((resolve, reject) => {
 		const data: string[] = []