build: Update build_release_vitepress.yml

Pin Convetional Commits changelog to v6

Author: ZanzyTHEbar

.github/workflows/build_release_vitepress.yml

@@ -55,7 +55,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 18
-      - run: npm install -g conventional-changelog-conventionalcommits
+      - run: npm install -g conventional-changelog-conventionalcommits@6
       - run: npm install -g semantic-release@v19.0.5
       - run: npm install -g @semantic-release/exec
       - run: npm install -g @semantic-release/git