chore: pin deps

Author: dutterbutter

.github/workflows/ci-docs.yaml

@@ -54,11 +54,14 @@ jobs:
       - name: Setup Rust
         uses: actions-rust-lang/setup-rust-toolchain@1780873c7b576612439a134613cc4cc74ce5538c # v1.15.2
 
+      - name: Install mdBook
+        run: cargo install mdbook --version 0.4.40 --locked
+
       - name: Install mdbook-yapp
-        run: cargo install mdbook-yapp --locked
+        run: cargo install mdbook-yapp --version "1.2.4" --locked
 
       - name: Install mdbook-admonish
-        run: cargo install mdbook-admonish --locked
+        run: cargo install mdbook-admonish --version "1.20.0" --locked
 
       - name: Deploy mdBook to gh-pages
         uses: matter-labs/deploy-mdbooks@c72ae3825faeb7d20cbf3e67714f7253dd0ee7cb