[Cashtab] Bump extension version

Summary:
T2875

Bumping the minor version number as this is the first version to fully deprecate bch-js and bch-api

Test Plan:
npm run extension
Use the browser extension to send an XEC tx
Use the browser extension to send an eToken tx
Navigate to components.cashtab.com
Test clicking on a pay button
Test address sharing

Reviewers: #bitcoin_abc, emack

Reviewed By: #bitcoin_abc, emack

Differential Revision: https://reviews.bitcoinabc.org/D12888