requirements-dev.txt: silabs needs setuptools

dhalbert · dhalbert · commit 13b31ca8c7fd · 2024-06-02T15:00:51.000-04:00
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -36,3 +36,6 @@ jsmin
 # for Silicon Labs Configurator (SLC)
 websockets
 colorama
+
+# for silabs builds
+setuptools
