Version rollout (#12125)

* Bump version and create initial changelog entry

* Update Catalan.properties (#12124)

* Update Japanese translation (#12123)

* update

* update

* update

* Update Brazilian_Portuguese.properties (#12121)

added some missing translations for pt-br

* Update Italian.properties (#12119)

* Update Ukrainian translations (#12117)

Co-authored-by: Kostiantyn Ko <mormat.iam@gmail.com>

* Update Latin translation (#12116)

* Fix and update translation

* Update translation

* Update translation

* Update translation

* Update translation

* Update translation

* Update translation

* Fix translation

* Update translation

* Fix translation

* Fix translation

* Update translation

* Fix translation

---------

Co-authored-by: sls1005 <sls1005@github.com>

* Update French.properties (#12115)

* Update Indonesian.properties (#12114)

Translated the new words and corrected a few grammatical mistakes.

* Update German translation (#12113)

* Fixed test

---------

Co-authored-by: yairm210 <yairm210@users.noreply.github.com>
Co-authored-by: Joan Josep <juanjo.ng.83@gmail.com>
Co-authored-by: yuracla <89312848+yuracla@users.noreply.github.com>
Co-authored-by: murilozinkkkj <78273099+murilozinkkkj@users.noreply.github.com>
Co-authored-by: Giuseppe D'Addio <41149920+Smashfanful@users.noreply.github.com>
Co-authored-by: Kostiantyn Ko <test9@mormat.name>
Co-authored-by: Kostiantyn Ko <mormat.iam@gmail.com>
Co-authored-by: sls1005 <90055573+sls1005@users.noreply.github.com>
Co-authored-by: sls1005 <sls1005@github.com>
Co-authored-by: Ouaz <Ouaz@users.noreply.github.com>
Co-authored-by: X2003 <158255876+Xenia2003@users.noreply.github.com>
Co-authored-by: mape6 <mape6@posteo.de>

buildSrc/src/main/kotlin/BuildConfig.kt

@@ -4,8 +4,8 @@ package com.unciv.build
 object BuildConfig {
     const val kotlinVersion = "1.9.24"
     const val appName = "Unciv"
-    const val appCodeNumber = 1037
-    const val appVersion = "4.12.19"
+    const val appCodeNumber = 1038
+    const val appVersion = "4.12.20"
 
     const val gdxVersion = "1.12.1"
     const val ktorVersion = "2.3.12"