Update cargo-bins/cargo-binstall action to v1.6.7

.github/workflows/docs.yml

@@ -29,7 +29,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install cargo-binstall
-        uses: cargo-bins/[email protected].5
+        uses: cargo-bins/[email protected].7
       - name: Install dependencies
         run: |
           cargo binstall --no-confirm --version ${MDBOOK_VERSION} mdbook