fix: LSDV-5132: Fix the font color on button hover (#4247)

* [submodules] Build static heartexlabs/label-studio-frontend

* docs: LSF Update

* [submodules] Build static heartexlabs/label-studio-frontend

* [submodules] Build static heartexlabs/label-studio-frontend

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Co-authored-by: Julio Sgarbi <julio.sgarbi@hotmail.com>
Co-authored-by: juliosgarbi <juliosgarbi@users.noreply.github.com>