fix: Update maintainer info

Author: Darep

setup.py

@@ -14,8 +14,8 @@
     long_description=long_description,
     long_description_content_type='text/markdown',
     author='Elias Nygren',
-    maintainer='Mika Lackman',
-    maintainer_email='mika.lackman@upcloud.com',
+    maintainer='UpCloud',
+    maintainer_email='hello@upcloud.com',
     url='https://github.com/UpCloudLtd/upcloud-python-api',
     packages=['upcloud_api', 'upcloud_api.cloud_manager'],
     download_url='https://github.com/UpCloudLtd/upcloud-python-api/archive/%s.tar.gz' % version,