OpenAPIV3Parser.readContents() encoding error

[mkuraev]

Get "Invalid UTF-8 middle byte ..." error when run java with default character encoding different from UTF-* (for example -Dfile.encoding=windows-1251) and call readContents() for swagger specification containing characters other than Latin (for example Cyrillic).

Problem in line:
mapper.readTree(swaggerAsString.getBytes());
where the default encoding is used

Should be
mapper.readTree(swaggerAsString);
since there is no need to call getBytes()

[mkuraev]

#1197

[gracekarina]

thanks @mkuraev this was closed by #1197 1197 PR