Bump Microsoft.AspNetCore.Authentication.JwtBearer in /src/WebUI/WebApp
Bump Microsoft.AspNetCore.Authentication.JwtBearer in /src/WebUI/WebApp

Bumps [Microsoft.AspNetCore.Authentication.JwtBearer](https://github.com/aspnet/AspNetCore) from 3.1.0 to 3.1.18.
- [Release notes](https://github.com/aspnet/AspNetCore/releases)
- [Commits](https://github.com/aspnet/AspNetCore/compare/v3.1.0...v3.1.18)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.Authentication.JwtBearer
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
govmeeting/govmeeting,govmeeting/govmeeting,govmeeting/govmeeting,govmeeting/govmeeting,govmeeting/govmeeting