Rename CyclopsBlink_modified_install_upgrade.yar.txt to CyclopsBlink_modified_install_upgrade.yar

yara/CyclopsBlink_modified_install_upgrade.yar

@@ -28,4 +28,4 @@ install_upgrade executable, embedded within Cyclops Blink"
  $ = {3C 00 48 4D 60 00 41 43 90 09 00 00}
  condition:
  (uint32(0) == 0x464c457f) and (6 of them)
-}
+}