Merge pull request #21 from rust-bitcoin/dependabot/github_actions/peaceiris/actions-mdbook-2

Bump peaceiris/actions-mdbook from 1 to 2

Author: tcharding

.github/workflows/gh-pages.yml

@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0   # we just need the latest commit
 
       - name: Setup mdBook
-        uses: peaceiris/actions-mdbook@v1
+        uses: peaceiris/actions-mdbook@v2
         with:
           mdbook-version: 'latest'