Update npm installs to versioned installs

Signed-off-by: Charlie Egan <charlie@styra.com>

.github/workflows/build.yaml

@@ -40,6 +40,8 @@ jobs:
         with:
           version: v0.69.0
           static: ${{ matrix.os.static }}
+      - run: npm install -g markdownlint-cli@0.42.0
+      - run: npm install -g dprint@0.47.2
       - name: Restore rq cache
         id: cache-rq
         uses: actions/cache@2cdf405574d6ef1f33a1d12acccd3ae82f47b3f2 # v4.1.0