Update requirements.txt with new versions of dependencies

A lot of dependencies changed recently due to the Qt and Python upgrade.

requirements.txt

@@ -1,14 +1,18 @@
+cffi==1.14.1
 colorlog
+cryptography==3.4.6
+importlib-metadata==3.7.2
 mypy==0.740
-PyQt5==5.10
-numpy==1.15.4
-scipy==1.2.0
-shapely[vectorized]==1.6.4.post2
+numpy==1.20.2
+PyQt5==5.15.2
+PyQt5-sip==12.8.1
+scipy==1.6.1
+shapely[vectorized]==1.7.1
+twisted==21.2.0
+typing
 appdirs==1.4.3
 certifi==2019.11.28
-cffi==1.13.1
 chardet==3.0.4
-cryptography==2.8
 decorator==4.4.0
 idna==2.8
 netifaces==0.10.9
@@ -26,10 +30,7 @@ requests==2.22.0
 sentry-sdk==0.13.5
 six==1.12.0
 trimesh==3.2.33
-typing==3.7.4
-twisted==19.10.0
 urllib3==1.25.6
-PyYAML==5.1.2
 zeroconf==0.24.1
 comtypes==1.1.7
 pywin32==300