fix(scripts): running commands with certain shells

Due to a bug with `execFileSync` [1], arguments passed to it when used
in combination with the `shell: true` option won't be used on certain
shells. Notably, this includes many Unix shells (such as Bash). Luckily,
for the purposes of this project, `spawnSync` can be used instead.

--
1. nodejs/node#43333

Author: ericcornelissen

scripts/utilities/exec.js

@@ -15,7 +15,7 @@ function tryLogError(error) {
 
 export default function execSync(command, args, options) {
   try {
-    cp.execFileSync(command, args, {
+    cp.spawnSync(command, args, {
       ...options,
       shell: true,
     });