Update repositories.txt (#4335)

tylermnielsen · web-flow · commit 03088f32e42c · 2024-04-10T04:15:23.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -6847,3 +6847,4 @@ https://github.com/bavathd/tago_esp32
 https://github.com/stm32duino/X-NUCLEO-53L4A3
 https://github.com/stm32duino/VL53L4ED
 https://github.com/arduino-libraries/Arduino_Cellular
+https://github.com/SnailDragon/MightyOhmGeigerCounter
