Add JCON USA for java

[confs-tech-bot]

Conference information

Website: https://2026.usa.jcon.one

Mastodon: @jcon@mastodon.social

Twitter: https://twitter.com/@jcon_conference

// java

{
  "name": "JCON USA",
  "url": "https://2026.usa.jcon.one",
  "startDate": "2026-10-26",
  "endDate": "2026-10-29",
  "city": "Atlanta, GA",
  "country": "U.S.A.",
  "online": false,
  "locales": "EN",
  "cocUrl": "https://static.tools.ibm.com/ibm/rainfocussc/static/staticfile/staticfile/749e10e1-85d5-4ddc-a5d84580df7db48b%20%281%29_1629917526803001Lrvs.pdf",
  "mastodon": "@jcon@mastodon.social",
  "twitter": "@jcon_conference"
}