fix(libdweb/ci): switch to dev yarn build

ci/Jenkinsfile

@@ -1,6 +1,7 @@
 import groovy.transform.Field
 // Global for which node version to use on macos and windows
-@Field final String nodeVersion = '9.2.0'
+// When in doubt, should follow https://github.com/ipfs/jenkins-libs/blob/master/vars/javascript.groovy
+@Field final String nodeVersion = '8.11.3'
 
 // Run targets in parallel
 parallel(
@@ -63,7 +64,7 @@ parallel(
                     bat 'npx yarn@1.7.0 config set msvs_version 2015 --global'
                     // run developer build as a smoke-test for windows
                     // bat 'npm run dev-build'
-                    bat 'npm run ci:install'
+                    bat 'npx yarn@1.7.0'
                     bat 'npm run libdweb:build'
                     bat 'dir /s /b /o:gn build'
                 }
@@ -93,7 +94,7 @@ parallel(
                     sh 'rm -rf node_modules/'
                     // run developer build as a smoke-test
                     // sh 'npm run dev-build'
-                    sh 'npm run ci:install'
+                    sh 'npx yarn@1.7.0'
                     sh 'npm run libdweb:build'
                     sh 'ls -Rlh build'
                 }

package.json

@@ -45,7 +45,7 @@
     "precommit": "run-s lint:standard",
     "prepush": "run-s clean build lint test",
     "firefox": "web-ext run --browser-console --url about:debugging",
-    "libdweb": "npm run ci:install && npm run libdweb:build && npm run libdweb:firefox",
+    "libdweb": "npx yarn@1.7.0 && npm run libdweb:build && npm run libdweb:firefox",
     "libdweb:build": "git submodule update --init --checkout --depth 1 libdweb && cross-env-shell RELEASE_CHANNEL=libdweb npm run dev-build",
     "libdweb:firefox": "npm run get-firefox-nightly && cross-env MOZ_DISABLE_CONTENT_SANDBOX=1 web-ext run --firefox=./firefox/firefox --browser-console --url about:debugging",
     "get-firefox-nightly": "shx test -e ./firefox/firefox || get-firefox -b nightly -e",