Update repositories.txt (#6965)

WeSpeakEnglish · web-flow · commit 39f8694357e7 · 2025-09-19T10:39:16.000Z
diff --git a/repositories.txt b/repositories.txt
@@ -8419,3 +8419,4 @@ https://github.com/stm32duino/ISM330IS
 https://github.com/stm32duino/ILPS22QS
 https://github.com/fulda1/SUSI2
 https://github.com/MISTERNEGATIVE21/QuectelEC200U_CN
+https://github.com/WeSpeakEnglish/ANTIRTOS_MODERN
