update cypress to above 4.12.1

[zhao-li]

This pull request updates cypress to above 4.12.1 to address security vulnerabilities of lodash < 4.17.19, a sub-dependency of cypress.

Package cypress has a sub-dependency on lodash. lodash has a vulnerability that is fixed in version 4.17.19+. cypress 4.11.0+ uses the lodash 4.17.19+. I figured it's best to just update to the latest cypress, which is 4.12.1.

Hope that helps 😄

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Docs
• Underlying tools (?dependency?)
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes
• No
• Unsure: this project isn't containerized and I don't want to install yarn and things on my host

Other information:
I'm hoping your CI will figure out if this is a breaking change or not.

Low             Prototype Pollution                                                                                                   
Package         lodash                                                                                                                
Patched in      >=4.17.19                                                                                                             
Dependency of   @vue/cli-plugin-e2e-cypress [dev]                                                                                     
Path            @vue/cli-plugin-e2e-cypress > cypress > lodash                                                                        
More info       https://npmjs.com/advisories/1523 

+-- @vue/cli-plugin-e2e-cypress@4.5.3
| `-- cypress@3.8.3
|   +-- getos@3.1.1
|   | `-- async@2.6.1
|   |   `-- lodash@4.17.19  deduped
|   `-- lodash@4.17.15 

[zhao-li]

This update will also address vulnerabilities in minimist < 1.2.3, which is a sub-dependency of cypress.

+-- @vue/cli-plugin-e2e-cypress@4.5.3
| `-- cypress@3.8.3
|   +-- extract-zip@1.6.7
|   | `-- mkdirp@0.5.1
|   |   `-- minimist@0.0.8 
|   `-- minimist@1.2.0

Package         minimist                                                                                                                                                                                                                                                      
Patched in      >=0.2.1 <1.0.0 || >=1.2.3                                                                                                                                                                                                                                     
Dependency of   @vue/cli-plugin-e2e-cypress [dev]                                                                                                                                                                                                                             
Path            @vue/cli-plugin-e2e-cypress > cypress > extract-zip > mkdirp                                                                                                                                                                                                  
                > minimist                                                                                                                                                                                                                                                    
More info       https://npmjs.com/advisories/1179                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                              
Low             Prototype Pollution                                                                                                                                                                                                                                           
Package         minimist                                                      
Patched in      >=0.2.1 <1.0.0 || >=1.2.3                                     
Dependency of   @vue/cli-plugin-e2e-cypress [dev]                             
Path            @vue/cli-plugin-e2e-cypress > cypress > minimist              
More info       https://npmjs.com/advisories/1179

Related issue: #5413

[haoqunjiang]

See #5139