update maven in appveyor

appveyor.yml

@@ -9,19 +9,19 @@ install:
  Add-Type -AssemblyName System.IO.Compression.FileSystem
  if (!(Test-Path -Path "C:\maven" )) {
  (new-object System.Net.WebClient).DownloadFile(
- 'http:https://www.us.apache.org/dist/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.zip',
+ 'http:https://www.us.apache.org/dist/maven/maven-3/3.5.4/binaries/apache-maven-3.5.4-bin.zip',
  'C:\maven-bin.zip'
  )
  [System.IO.Compression.ZipFile]::ExtractToDirectory("C:\maven-bin.zip", "C:\maven")
  }
- - cmd: SET PATH=C:\maven\apache-maven-3.2.5\bin;%JAVA_HOME%\bin;%PATH%
+ - cmd: SET PATH=C:\maven\apache-maven-3.5.4\bin;%JAVA_HOME%\bin;%PATH%
  - cmd: SET MAVEN_OPTS=-XX:MaxPermSize=2g -Xmx4g
  - cmd: SET JAVA_OPTS=-XX:MaxPermSize=2g -Xmx4g
- - cmd: SET M2_HOME=C:\maven\apache-maven-3.2.5
+ - cmd: SET M2_HOME=C:\maven\apache-maven-3.5.4
  - cmd: dir/w
 # - cmd: RMDIR "C:\projects\swagger-codegen\swagger-samples" /S /Q
  - git clone https://github.com/wing328/swagger-samples
- - ps: Start-Process -FilePath 'C:\maven\apache-maven-3.2.5\bin\mvn' -ArgumentList 'jetty:run' -WorkingDirectory "$env:appveyor_build_folder\swagger-samples\java\java-jersey-jaxrs-ci"
+ - ps: Start-Process -FilePath 'C:\maven\apache-maven-3.5.4\bin\mvn' -ArgumentList 'jetty:run' -WorkingDirectory "$env:appveyor_build_folder\swagger-samples\java\java-jersey-jaxrs-ci"
 build_script:
  # build C# API client
  - nuget restore samples\client\petstore\csharp\SwaggerClient\IO.Swagger.sln