go back to local copy of ArduinoJson as a single header

platformio.ini

@@ -81,7 +81,6 @@ check_flags =
 lib_ldf_mode = chain+
 lib_deps = 
   https://github.com/emsesp/EMS-ESP-Modules.git
-  bblanchon/ArduinoJson@7.1.0
 
 ; build for GitHub Actions CI
 ; the Web interface is built seperately, so is skipped in extra_scripts
@@ -229,6 +228,7 @@ build_src_flags =
   -I./lib/uuid-log/src
   -I./lib/semver
   -I./lib/PButton
+  -I./lib/ArduinoJson
   -I./lib/espMqttClient/src
   -I./lib/espMqttClient/src/Transport
 build_src_filter =
@@ -244,4 +244,4 @@ build_src_filter =
   +<../lib/espMqttClient/src/Transport>
 lib_compat_mode = off
 lib_ldf_mode = off
-lib_ignore = ArduinoJson
+lib_ignore = Module EMS-ESP-Modules