Is your feature request related to a problem? Please describe.
Some of the latest icons in ionicons v5 are not included.

Describe the solution you'd like
This package currently adopts ionicons v5.2.3 (released in Oct 2020), though the latest version of ionicons is v5.5.0 (released in Feb 2021). 1 new icon was added in v5.3.0 and 31 new icons were added in v5.4.0.
Just upgrading ionicons to the latest version, we can use 32 more icons.

Describe alternatives you've considered
None

Additional context

• 1 icon added in 5.3.0
• 31 icons added in v5.4.0