Bump npm node (#1029)

* bump npm/node

* definitionVersion

Author: joshspicer

containers/codespaces-linux/.devcontainer/base.Dockerfile

@@ -122,4 +122,8 @@ RUN if [ -z $DeveloperBuild ]; then \
         curl -sSL https://aka.ms/getvsdbgsh | bash /dev/stdin -v latest -l /vsdbg ; \
     fi
 
-USER ${USERNAME}
+USER ${USERNAME}
+
+# Bump npm/node
+RUN npm install -g npm@6
+RUN nvm install 14.17.6

containers/codespaces-linux/definition-manifest.json

@@ -1,5 +1,5 @@
 {
-	"definitionVersion": "1.6.4",
+	"definitionVersion": "1.6.5",
 	"build": {
 		"latest": true,
 		"rootDistro": "debian",