build: Run yarn-deduplicate

[AbhiPrasad]

Retry of #5747

Use https://github.com/atlassian/yarn-deduplicate to make sure we dedupe deps properly. This should help speed up CI times since we don't have to cache as much stuff.

Had to adjust Svelte tests because was getting the follow error:

FAIL  test/sdk.test.ts
  ● Test suite failed to run

    Failed to get mock metadata: /Users/abhijeetprasad/workspace/sentry-javascript/packages/browser/build/npm/cjs/index.js

    See: https://jestjs.io/docs/manual-mocks#content

    > 1 | import { addGlobalEventProcessor, init as browserInitRaw, SDK_VERSION } from '@sentry/browser';
        | ^
      2 | import { EventProcessor } from '@sentry/types';
      3 |
      4 | import { detectAndReportSvelteKit, init as svelteInit, isSvelteKitApp } from '../src/sdk';

      at Runtime._generateMock (../../node_modules/jest-runtime/build/index.js:1901:15)
      at Object.<anonymous> (test/sdk.test.ts:1:1)
      at TestScheduler.scheduleTests (../../node_modules/@jest/core/build/TestScheduler.js:333:13)
      at runJest (../../node_modules/@jest/core/build/runJest.js:404:19)
      at _run10000 (../../node_modules/@jest/core/build/cli/index.js:320:7)
      at runCLI (../../node_modules/@jest/core/build/cli/index.js:173:3)

Edit: also had to adjust the Gatsby tests because of the same.

Prev: #3798