fix(deps): update dependency ngx-sharebuttons to v15

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ngx-sharebuttons (source)	^13.0.0 -> ^15.0.0

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Release Notes

MurhafSousli/ngx-sharebuttons (ngx-sharebuttons)

v15.0.3

Compare Source

• enhance: enhance: Use injection factory for SHARE_BUTTONS_CONFIG and SHARE_BUTTONS_PROP to avoid merging custom options with the default options for every share button.

v15.0.2

Compare Source

• No Changes, just fixing the minimum Angular version to v17.1.0 and add missing fields to package.json in NPM.

v15.0.1

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• fix: Share directive requires icons dependencies, closes #​673.
• refactor: Import FaIconComponent instead of FontAwesomeModule.
• refactor: Remove CommonModule imports.
• refactor: Avoid merging default options with injected options for each share directive / component instance.

v15.0.0

Compare Source

• feat: Upgrade to Angular 18.
• refactor: Mark the function withIcons() as deprecated and rename it to shareIcons(), no breaking changes.

v14.0.0

Compare Source

• feat: Upgrade to angular v17.1.0.
• feat: Add a service for sharing links, closes #​661.
• feat: Add new provider functions to easily override share buttons options.
• enhance: Update share logos colors.
• enhance: Replace Twitter with X, closes #​650 and #​657.
• feat: Ability to create a sharer links through the share service.
• feat: Add args input to add additional custom parameters to the sharer link.
• feat: Remove rxjs dependency.
• fix: Cannot override windowObj due to mergeDeep, closes #​572.
• fix: config is ignored if the module is lazy loaded, closes #​579.
• fix: opened output not firing, closes #​633.

Breaking changes:

• Rename ShareButtonConfig to ShareButtonsOptions.
• Remove closed output from share directive and components.
• Remove autoSetMeta input from share directive and components.
• remove url ,title, description ,image ,tags and redirectUrl from global options

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