Version updates

Author: Faustasm

.travis.yml

@@ -25,4 +25,4 @@ deploy:
   on:
     repo: UpCloudLtd/upcloud-python-api
     tags: true
-    python: "3.8"
+    python: "3.9"

setup.py

@@ -39,7 +39,7 @@ def get_version(rel_path):
     license='MIT',
     python_requires='>3.5',
     install_requires=[
-        'requests>=2.6.0',
-        'six>=1.9.0'
+        'requests>=2.24.0',
+        'six==1.15.0'
     ]
 )