chg: Bump dependencies

.travis.yml

@@ -1,8 +1,6 @@
 language: python
 
 python:
-  - "3.6"
-  - "3.6-dev"
   - "3.7"
   - "3.7-dev"
   - "3.8"

poetry.lock

@@ -305,7 +305,7 @@ publicsuffix2 = "^2.20191221"
 six = "^1.14.0"
 
 [package.source]
-reference = "64224ba03987a7df603aa36476f650e4473b2c22"
+reference = "1d7f7a93aa1a216672e32aa3c494ecf2ed865c07"
 type = "git"
 url = "https://github.com/viper-framework/har2tree.git"
 [[package]]
@@ -872,7 +872,7 @@ scrapy = "^1.8.0"
 scrapy-splash = "^0.7.2"
 
 [package.source]
-reference = "3a58d1d751efc0dee54c6d2f485f9d226a5c2e79"
+reference = "061bf90327a6052801416f786f544c95b310dec2"
 type = "git"
 url = "https://github.com/viper-framework/ScrapySplashWrapper.git"
 [[package]]