Add U+2E30 and U+2E31 to Avestan requirements.
Add U+2E30 and U+2E31 to Avestan requirements.

Reported in issue 323.

wskplho/noto-monolithic,yannisl/noto-monolithic,wskplho/noto-monolithic,yannisl/noto-monolithic,wskplho/noto-monolithic,yannisl/noto-monolithic,yannisl/noto-monolithic,wskplho/noto-monolithic