fix(test): update create fixtures for changed component schemas

keboola.app-data-gateway: schema changed from {"action": ""} to a full
db-connection object with driver/host/port/etc fields.

keboola.ex-db-mysql: ssh section no longer includes "#privateKey" field.

Both are upstream API-side schema changes unrelated to this PR's changes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Matovidlo

test/cli/create/config-data-gateway/out/main/application/keboola.app-data-gateway/new-config/config.json

@@ -1,5 +1,20 @@
 {
   "parameters": {
-    "action": ""
+    "db": {
+      "#privateKey": "",
+      "account": "",
+      "database": "",
+      "driver": "",
+      "host": "",
+      "loginType": "",
+      "port": 443,
+      "region": "",
+      "role": "",
+      "schema": "",
+      "ssoLoginAvailable": false,
+      "user": "",
+      "warehouse": "",
+      "workspaceId": 0
+    }
   }
 }

test/cli/create/config/out/main/extractor/keboola.ex-db-mysql/new-config/config.json

@@ -10,7 +10,6 @@
       "networkCompression": false,
       "port": 0,
       "ssh": {
-        "#privateKey": "",
         "enabled": false,
         "keys": {
           "#private": "",