Update jest raw loader regex

What does this MR do and why?

Follow-up from !116427 (merged)

In &10244 (closed) we are Replace loadHTMLFixture with static imports. Currently html files in spec/frontend/fixtures/static aren't supported by our jest config so those ones can't be updated. This MR updates the jest config to support html files in spec/frontend/fixtures/static.

How to set up and validate locally

Run yarn jest spec/frontend/blob/sketch/index_spec.js. It should pass.

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