Move migration test fixtures to the correct directories (#21901)

Unfortunately #21549 changed the name of Testcases without changing
their associated fixture directories.

Fix #21854

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

models/migrations/fixtures/Test_AddHeaderAuthorizationEncryptedColWebhook/expected_webhook.yml

@@ -0,0 +1,9 @@
+# for matrix, the access_token has been moved to "header_authorization"
+-
+  id: 1
+  meta: '{"homeserver_url":"https://matrix.example.com","room_id":"roomID","message_type":1}'
+  header_authorization: "Bearer s3cr3t"
+-
+  id: 2
+  meta: ''
+  header_authorization: ""

models/migrations/fixtures/Test_AddHeaderAuthorizationEncryptedColWebhook/hook_task.yml

@@ -0,0 +1,8 @@
+# unsafe payload
+- id: 1
+  hook_id: 1
+  payload_content: '{"homeserver_url":"https://matrix.example.com","room_id":"roomID","access_token":"s3cr3t","message_type":1}'
+# safe payload
+- id: 2
+  hook_id: 2
+  payload_content: '{"homeserver_url":"https://matrix.example.com","room_id":"roomID","message_type":1}'

models/migrations/fixtures/Test_AddHeaderAuthorizationEncryptedColWebhook/webhook.yml

@@ -0,0 +1,10 @@
+# matrix webhook
+- id: 1
+  type: matrix
+  meta: '{"homeserver_url":"https://matrix.example.com","room_id":"roomID","access_token":"s3cr3t","message_type":1}'
+  header_authorization_encrypted: ''
+# gitea webhook
+- id: 2
+  type: gitea
+  meta: ''
+  header_authorization_encrypted: ''