Bugfix:Midnight theme button contrast (#2538)

* added green700 (g3) to highlight text in PayeeAutocomplete and CategoryAutocomplete

* added upcoming release note doc for Isuee 2488

* modified background and text to meet WCAG AA compliance for contrast

* updated code for autocomplete highlight on menu items

* fixed linting errors and renamed release note

* updated release note category from 'bug' to 'bugfix'

* fixing the light theme

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Co-authored-by: Jenn Cox <jenncox@Jenns-MacBook-Air.local>