Replace MySQL use-ssl boolean with explicit connection-parameters (sslMode)

src/main/resources/config.yml

@@ -54,8 +54,13 @@ storage:
     database: blockparty
     username: blockparty
     password: password
-    use-ssl: false
     table-prefix: "bp_"
+    # Raw JDBC connection parameters appended to the connection URL (without a leading '?' or '&').
+    # Tune SSL/TLS behavior here instead of a single use-ssl toggle, e.g.:
+    #   "sslMode=REQUIRED&verifyServerCertificate=false"
+    #   "sslMode=VERIFY_IDENTITY" (validates the server cert against a trust store)
+    #   "sslMode=DISABLED" (no TLS at all)
+    connection-parameters: "sslMode=PREFERRED&verifyServerCertificate=false"
 
 rewards:
   winner: