update @actions/core

[quantizor]

Should fix an error I've been seeing when trying to run this action:

Run andoshin11/[email protected]
Loaded [email protected] from CDN.
(node:3642) UnhandledPromiseRejectionWarning: TypeError: (e || "").replace is not a function
    at /home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:2442770
    at o.toString (/home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:2442832)
    at i (/home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:2442199)
    at Object.n.issue (/home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:2442259)
    at l (/home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:4067317)
    at Object.n.setFailed (/home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:4068058)
    at /home/runner/work/_actions/andoshin11/typescript-error-reporter-action/v1.0.2/dist/index.js:16:4043297
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
(node:3642) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:3642) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

https://github.com/actions/toolkit/blob/master/packages/core/RELEASES.md#124