Change to http url

Author: kattni

.gitmodules

@@ -225,4 +225,4 @@
 	url = https://github.com/adafruit/Adafruit_CircuitPython_RFM9x.git
 [submodule "libraries/drivers/am2320"]
 	path = libraries/drivers/am2320
-	url = git@github.com:adafruit/Adafruit_CircuitPython_AM2320.git
+	url = https://github.com/adafruit/Adafruit_CircuitPython_AM2320.git