fix(cypress): allow users to update cypress (#6062)

packages/@vue/cli-plugin-e2e-cypress/index.js

@@ -1,5 +1,5 @@
 module.exports = (api, options) => {
-  const { info, chalk, execa } = require('@vue/cli-shared-utils')
+  const { info, chalk, execa, resolveModule } = require('@vue/cli-shared-utils')
 
   api.registerCommand('test:e2e', {
     description: 'run e2e tests with Cypress',
@@ -31,7 +31,9 @@ module.exports = (api, options) => {
       ...rawArgs
     ]
 
-    const cypressBinPath = require.resolve('cypress/bin/cypress')
+    // Use loadModule to allow users to customize their Cypress dependency version.
+    const cypressBinPath = resolveModule('cypress/bin/cypress', api.getCwd()) ||
+      resolveModule('cypress/bin/cypress', __dirname)
     const runner = execa(cypressBinPath, cyArgs, { stdio: 'inherit' })
     if (server) {
       runner.on('exit', () => server.close())