Update mautrix-python and move login depds to requirements.txt

optional-requirements.txt

@@ -5,7 +5,3 @@
 python-olm>=3,<4
 pycryptodome>=3,<4
 unpaddedbase64>=1,<2
-
-#/login
-pillow>=4,<8
-qrcode>=6,<7

requirements.txt

@@ -4,5 +4,7 @@ commonmark>=0.8,<0.10
 aiohttp>=3,<4
 yarl>=1,<2
 attrs>=19.1
-mautrix==0.7.0rc1
+mautrix==0.7.0rc4
 asyncpg>=0.20,<0.21
+pillow>=4,<8
+qrcode>=6,<7