Describe the bug

I ran a lighthouse 6 audit on a page with b-pagination-nav and it came back with an aria error.
https://storage.googleapis.com/lighthouse-infrastructure.appspot.com/reports/1590623485410-54343.report.html
[aria-*] attributes do not match their roles
Each ARIA role supports a specific subset of aria-* attributes. Mismatching these invalidates the aria-* attributes. Learn more.

<a href="/recipes" aria-current="page" aria-label="Go to page 1" aria-posinset="1" aria-setsize="2" target="_self" class="page-link nuxt-link-exact-active active">1</a>

Expected behavior

It seems like the tag is missing a role attribute: https://www.w3.org/TR/wai-aria-1.1/#aria-setsize

Versions

Libraries:

• BootstrapVue: 2.15.0
• Nuxt: 2.12.2

Environment:

• Device: Emulated Moto G4
• OS: Linux
• Browser: HeadlessChrome
• Version: 83.0.4103.61