Update tsconfig if available

[kachick]

wait-other-jobs/tsconfig.json

Line 2 in 0c0412f

// TODO: Use tsconfig/base after all tools support tsconfig.extends array

#537 (comment)

Should wait one of following issues.

• Update to Node 20 and replace jest with built in test runner: Update to Node.js 20.x action-typescript-template#387 => actions/runner nodejs plan and next steps actions/runner#2704 (comment)
• Keep Node 16 and jest, but replace ts-node with tsx in jest loader: [Feature]: Allow using tsx instead of ts-node for loading TS config files jestjs/jest#13143