build: bump to 4.6.0

Author: gotev

manifest.gradle

@@ -9,8 +9,8 @@ ext {
     library_licenses = ["Apache-2.0"]
     library_licenses_url = 'https://www.apache.org/licenses/LICENSE-2.0.txt'
     library_project_group = 'net.gotev'
-    library_version = '4.5.5'
-    version_code = 46
+    library_version = '4.6.0'
+    version_code = 47
     min_sdk = 21
     target_sdk = 30
     demo_app_id = 'net.gotev.uploadservicedemo'