curl 8.15.0_4 with nghttp3/ngtcp2 callback patch

Author: vszakats

_versions.sh

@@ -11,7 +11,7 @@ export CURL_HASH=6cd0a8a5b126ddfda61c94dc2c3fc53481ba7a35461cf7c5ab66aa9d6775b60
 # Create revision string
 # NOTE: Set _REV to 1 after bumping CURL_VER_, then increment for each
 #       CI rebuild via `main` branch push (e.g. after bumping a dependency).
-export _REV="${CW_REVISION:-3}"
+export _REV="${CW_REVISION:-4}"
 
 export TRURL_VER_='0.16.1'
 export TRURL_HASH=aac947d4fb421a58abc19a3771e87942cd4721b8f855c433478c94c11a8203ba