v1.574.0

• Attempt to fix prod deploy failure after concurrent builds
  #2669

v1.573.0

• Remove polyfills for features supported by all target browsers
  #2668

v1.572.0

• Run "yarn upgrade" #2666

v1.571.0

• Enable terser workarounds for Safari 10
  #2665

v1.570.0

• Remove unused iframe attributes #2663

v1.569.0

• Merge Host and Sidebar classes #2662

v1.568.0

• Rewrite bucket-generating logic #2647

v1.567.0

• Remove dependency of src/boot on src/shared
  #2658

v1.566.0

Bump preact from 10.5.4 to 10.5.5

Bumps [preact](https://github.com/preactjs/preact) from 10.5.4 to 10.5.5.
- [Release notes](https://github.com/preactjs/preact/releases)
- [Commits](https://github.com/preactjs/preact/compare/10.5.4...10.5.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

v1.565.0

• Show a warning when PDF does not have selectable text
  #2623