build(deps): bump actions/deploy-pages from 1 to 2 (#25)

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 1 to 2.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](actions/deploy-pages@v1...v2)

---
updated-dependencies:
- dependency-name: actions/deploy-pages
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Knell <contact@danielknell.co.uk>

Author: dependabot[bot]

.github/workflows/docs.yaml

@@ -59,4 +59,4 @@ jobs:
     steps:
       - name: deploy to pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v2