[hotfix] Pin node version (fix linux wheel build) (#11532)

Co-authored-by: Max Fitton <max@semprehealth.com>

python/build-wheel-manylinux1.sh

@@ -11,6 +11,7 @@ echo 10
 EOF
 chmod +x /usr/bin/nproc
 
+NODE_VERSION="14"
 PYTHONS=("cp36-cp36m"
          "cp37-cp37m"
          "cp38-cp38")
@@ -31,7 +32,7 @@ export PATH=$PATH:/root/bin
 set +x
 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
 source "$HOME"/.nvm/nvm.sh
-nvm install node
+nvm install $NODE_VERSION
 nvm use node
 
 # Build the dashboard so its static assets can be included in the wheel.