bump workbox-webpack-plugin from 6.6.1 to 7.0.0 (#1)

---
updated-dependencies:
- dependency-name: workbox-webpack-plugin
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]