fix: update stale Airbnb GQL hashes and client version

Comprehensive drift audit (scripts/har_audit.py against a HAR covering
login, calendar, messaging, price/availability writes, and reservation
details) found 5 of 7 operation hashes and X-Client-Version stale:
getDLSHostCalendar, EditPanelAvailabilityMutation,
StayHostingDetailsQuery, ViaductGetThreadAndDataQuery,
CreateBulkMessagesMutation.

room_cal/service_api/_airbnb.py

@@ -47,16 +47,16 @@ class AirbnbData:
 
 _BASE = 'https://www.airbnb.com/api/v3'
 _API_KEY = 'd306zoyjsyarp7ifhu67rjxn52tv0t20'
-_CLIENT_VERSION = '4e93a4878415297ab95d22665c666b6602dcfcbb'
+_CLIENT_VERSION = 'd2b819536102fb310c3d35777257319aee1c7fc1'
 _HASHES = {
-  'getDLSHostCalendar':               '048e22675ffa53121628d2d07b519b9b71f5dab342a1ceb75aa72d8814a00ea7',
+  'getDLSHostCalendar':               '5b153a16f8f392d6d4c6b5ee6259cf7f89ef972e0f79bf3f87753136af9a338c',
   'EditPanelPricingSettingsMutation': 'e27fed4f08dd4ab4c0267c5d6c0a7e4920730deadf48f92feba9b0d08befafa4',
-  'EditPanelAvailabilityMutation':    '2e056e7f98f8dc410a294c649adf719452980eb4d8ea95540fb1297af2637f67',
-  'StayHostingDetailsQuery':          '6da83b8bc9ae1b434f13938a55435118347b0e8ceb838e04c1feb84ecb587e6d',
+  'EditPanelAvailabilityMutation':    '1d321798756bddea88f11bcde6da336f70db64ee74dd8a9a30b91f4c7d6f1b64',
+  'StayHostingDetailsQuery':          '3641e070c5e57e44ada3d40eca288f5b739ed851c3bf03fe441e13e85dc30f50',
   'getNightlyPriceTips':              '07538bf1a5afc8171f1e7443f0007d7f020142fc7ab60df065e7e1edd1a0b29f',
   'HostCalendarListingEventsQuery':   '8bfe5f5572a25fdaff5b5790604e1de3aec5f37731fc505684022d590d06e0a8',
-  'ViaductGetThreadAndDataQuery':     'dd7478b376ad0a9709c7201b7e43cf402df011ec9d2fe4c1dff2ac418bcd9fb3',
-  'CreateBulkMessagesMutation':       '94ac2c4bd07edace539dbf2b9665d9030b6dee479db345ba8a8bbc234b3bbfa3',
+  'ViaductGetThreadAndDataQuery':     'be286f1a3810941029d1fd1f5be54df4f5cd146850636a648d6b19406caef21a',
+  'CreateBulkMessagesMutation':       '2abb1990dbf812cba634f28842fccb09e2a4351b247ea2f87839c20cc91c296a',
 }