Update triplea_maps.yaml - added tiberian_conquest_au

[RogerCooper]

Notes to Reviewer

Fixed preview file locations to raw.githubusercontent.com Added tiberian_conquest_au

[beelee1]

@RogerCooper I don't remember exactly what exit code 1 is but I think maybe some of the dependabot PRs need to merge to get gradle up to date.

"Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0."

Could be wrong too. Either way, one of the big guns would have to fix it

Edit For example #12920

[frigoref]

@RogerCooper please create a new clean PR with no failed checks or ask for assistance if checks fail and you cannot resolve them.