fix: announcing next and previous button in pagination and paginationNav

[riddhybansal]

Closes #14683

Pagination, PaginationNav - There is no label for the prev and next buttons

Changelog

New

• Added aria-label to Previous and next button in pagination and pagination nav.

Testing / Reviewing

Test Pagination and panginationNav in VO Iphone Safari.

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[carbon-automation]

Hey there! v11.60.0 was just released that references this issue/PR.