Upgrade to pa11y@8 (#161)

* Use `pa11y@^8` in place of `^7`

* Fix the name of the publishing job, setting it to `publish` rather than `build`

* Allow `publish` to return to `ubuntu-latest`

Author: danyalaytekin

.github/workflows/publish.yml

@@ -10,8 +10,8 @@ on:
         type: boolean
 
 jobs:
-  build:
-    runs-on: ubuntu-20.04
+  publish:
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4