Migrate ESLint to v 9.x

This bumps needed dependencies and migrates previously used ESLint configs to the new flat config schema.

playwright/fixtures/cleanup.ts

@@ -11,7 +11,6 @@ export interface Cleanup {
 }
 
 export const test = oldTest.extend<WithCleanup>({
-  // eslint-disable-next-line no-empty-pattern
   cleanup: async ({}, use) => {
     const cleanupFns: Map<symbol, () => Promise<unknown>> = new Map();
 

playwright/fixtures/popupHandler.ts

@@ -11,7 +11,6 @@ export const test = base.extend<PopupHandlerFixture>({
   popupHandler: [
     async ({ page }, use) => {
       await closePopupsIfExist(page);
-      // eslint-disable-next-line react-hooks/rules-of-hooks
       await use(undefined);
     },
     { auto: true },