fix[cli-test]: update buffer type in tests (#2411)

Author: WilliamBergamin

packages/cli-test/src/cli/shell.spec.ts

@@ -12,7 +12,7 @@ describe('shell module', () => {
   let spawnSpy: sinon.SinonStub;
   let spawnProcess: child.ChildProcessWithoutNullStreams;
   let runSpy: sinon.SinonStub;
-  let runOutput: child.SpawnSyncReturns<Buffer>;
+  let runOutput: child.SpawnSyncReturns<Buffer<ArrayBuffer>>;
 
   beforeEach(() => {
     spawnProcess = mockProcess();

packages/cli-test/src/cli/shell.ts

@@ -105,7 +105,6 @@ export const shell = {
    */
   checkIfFinished: async function checkIfFinished(proc: ShellProcess): Promise<void> {
     return new Promise((resolve, reject) => {
-      // biome-ignore lint/style/useConst: closing over timeout variable
       let timeout: NodeJS.Timeout;
 
       const killIt = (reason: string) => {