lock the old esp framework (3.5)

Random90 · Random90 · commit 8fc9ac91f915 · 2023-02-27T19:12:10.000+01:00
- shall I go back to developing new features? :)
diff --git a/platformio.ini b/platformio.ini
@@ -11,7 +11,7 @@
 src_dir = main
 
 [env:esp32dev]
-platform = espressif32
+platform = espressif32 @ 3.5.0
 board = esp32dev
 framework = espidf
 monitor_speed = 115200
