[REQ] [nodejs.express.server] Remove unused axios package from package.mustache

[davidtaing]

Original Title: Bump axios to version v0.21.3 or Higher Due to ReDos & SSRF Vulns

Update: I went through the codebase and found that Axios is not used in the starter build. My suggestion will change to the removal of axios instead of updating to the current version.

Description

Axios is on version 0.19.0 in the nodejs-express-server generator. And is affected by ReDos and SSRF vulnerabilities.
https://snyk.io/vuln/npm:axios

ReDos affecting versions <0.21.3
https://snyk.io/vuln/SNYK-JS-AXIOS-1579269

SSRF Vulnerabilty affecting versions <0.21.1
https://snyk.io/vuln/SNYK-JS-AXIOS-1038255

openapi-generator version

nodejs-express-server

Suggest a fix/enhancement

Update Remove axios package from the package.mustache file for nodejs-express-server.
https://github.com/OpenAPITools/openapi-generator/blob/3c866fb4a34e86d0ea2fef401a30206d7452bd2a/modules/openapi-generator/src/main/resources/nodejs-express-server/package.mustache

Related issues/PRs

This was updated in the typescript-axios generator.
#8432

Further Information

I checked the other JavaScript based generators and only this generator and the typescript-axios generator have axios as a dependency. In the typescript-axios generator axios has been updated to the current version (0.21.4) and will not be affected by the vulnerabilities above,