improve caching in mdbook-docs.yml

Author: sanity

.github/workflows/mdbook-docs.yml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 0
       - name: Determine current mdbook version
         id: mdbook-version
-        uses: pozetroninc/github-action-get-latest-release@v0.5.0
+        uses: pozetroninc/github-action-get-latest-release@06da55dc399d06375d2d1fe57542398d5bd989c6
         with:
           owner: rust-lang
           repo: mdBook
@@ -41,7 +41,7 @@ jobs:
           curl --proto '=https' --tlsv1.2 -sSf https://rossmacarthur.github.io/install/crate.sh | bash -s -- --repo "rust-lang/mdBook" --bin mdbook --to ~/.cargo/bin
       - name: Determine current mdbook-toc version
         id: mdbook-toc-version
-        uses: pozetroninc/github-action-get-latest-release@v0.5.0
+        uses: pozetroninc/github-action-get-latest-release@06da55dc399d06375d2d1fe57542398d5bd989c6
         with:
           owner: badboy
           repo: mdbook-toc