Update repositories.txt (#6638)

John-Karatka · web-flow · commit 1ca039c6b53a · 2025-07-22T17:34:03.000Z
Added DS1621 library
diff --git a/repositories.txt b/repositories.txt
@@ -8258,3 +8258,4 @@ https://github.com/John-Karatka/MAX6953
 https://github.com/MicroSui/microsui-lib
 https://github.com/muki01/OBD2_KLine_Library
 https://github.com/max22-/ble-keyboard-mouse-client
+https://github.com/John-Karatka/DS1621
