feat: update linea-besu-pkg versions for tracer, sequencer

Author: amkCha

linea-besu-package/versions.env

@@ -1,6 +1,6 @@
 LINEA_BESU_TAR_GZ=25.11.0-RC1-linea2
-LINEA_SEQUENCER_PLUGIN_VERSION=4.0-rc19
-LINEA_TRACER_PLUGIN_VERSION=beta-v4.0-rc19
+LINEA_SEQUENCER_PLUGIN_VERSION=4.0-rc21.1
+LINEA_TRACER_PLUGIN_VERSION=beta-v4.0-rc21
 LINEA_FINALIZED_TAG_UPDATER_PLUGIN_VERSION=0.3.0
 LINEA_STATERECOVERY_PLUGIN_VERSION=1.0.4
 SHOMEI_PLUGIN_VERSION=0.7.5