feat: update to ui5-webcomponents 1.20.0

[ilhan007]

Updates the dependency to latest ui5-webcomponents 1.20.0

Notable changes that concerns Reactive Forms support:

• Select web component has new property "value" that should fix FormControl issues as the Select ngx wrapper relies on setting/getting value https://github.com/SAP/ui5-webcomponents/pull/7865
• TextArea and StepInput now provide @formEvents, @formProperty so that respective ngx wrappers are extending the GenericControlValueAccessor and thus support FormControl properly https://github.com/SAP/ui5-webcomponents/pull/7859

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[g-cheishvili]

attachComponentStateFinalized and detachComponentStateFinalized methods are added, is that intended? Should those be exposed?

[g-cheishvili]

Side navigation output type is broken, it contains multiple same items in the enum and it also contains undefined

[g-cheishvili]

Issues are fixed with #104