Update repositories.txt

NitrofMtl · web-flow · commit 07b76f23388b · 2025-08-18T20:34:44.000-04:00
adding Arduino Due RS485 DMA library
diff --git a/repositories.txt b/repositories.txt
@@ -6294,3 +6294,4 @@ https://github.com/adafruit/Adafruit_VCNL4020
 https://gitlab.com/F-Schmidt/ulm_weatherballoon
 https://github.com/ConsentiumInc/ConsentiumThingsDalton
 https://github.com/NitrofMtl/DUE_ADC_Oversampler
+https://github.com/NitrofMtl/DUERS485DMA
