Remove unused font formats from config

[AlanGreene]

Changes

Update Jest and webpack config to remove unused font formats.

The only font loaded in the Dashboard is IBM Plex (via Carbon),
and Carbon only uses the woff and woff2 formats.

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[briangleeson]

/lgtm

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[AlanGreene]

npm install failed, unrelated to our code or the change in this PR
/test pull-tekton-dashboard-integration-tests

[AlanGreene]

/test pull-tekton-dashboard-integration-tests