ICU-22920 Fix raw type warnings in icu4j core tests

ICU-22724 BRS_76_GA Update version number to 76.1 (No more -SNAPSHOT)

ICU-22723 download 76rc

ICU-22718 Export disallowed/ignored UTS 46 data for ICU4X

ICU-22764 Fix gendict memory safety in toml uchars mode

(cherry picked from commit 23bf38f)

ICU-22535 Integrate CLDR 45 release beta5

ICU-22534 add mf2 to docmain.h

ICU-22583 BRS74: Version number update for 74.2

See #2734

ICU-22326 ICU 74 release not candidate

ICU-22324 Add docs for Maven usage

See #2655