Update flags.json

added some ch4 flags

Author: NotBuildingwalls

data/deltarune/flags.json

@@ -14,6 +14,7 @@
     "20": "other_text_command",
     "21": "door_freeze_timer",
     "22": "disable_x_slowing",
+    "23": "can_climb",
     "29": "susie_show_eyes",
     "30": "ralsei_hat_state",
     "31": "disable_loud_steps",
@@ -91,8 +92,8 @@
     "200": "ran_in_school",
     "201": "solved_eye_puzzle",
     "202": "ran_in_dark",
-    "203": "skipped_prophecy",
-    "204": "be_subject_answer",
+    "203": "skipped_legend",
+    "204": "unused_be_subject_answer",
     "205": "tutorial_end",
     "206": "learned_to_run",
     "207": "dropped_manual",
@@ -443,6 +444,8 @@
     "812": "beat_tm_says",
     "813": "beat_allstars",
     "814": "beat_joe",
+    "852": "beat_gerson",
+    "853": "gerson_losses",
     "900": "vessel_head",
     "901": "vessel_torso",
     "902": "vessel_legs",
@@ -743,4 +746,6 @@
     "1278": "swordroute_soda",
     "1279": "raise_bat_hard_hiscore",
     "1280": "raise_bat_hard_hirank"
+    "1561": "played_megalovania",
+    "1569": "betterheal",
 }