chore(release): Update changelog and package version [skip ci]

Author: apify-service-account

CHANGELOG.md

@@ -25,6 +25,7 @@ All notable changes to this project will be documented in this file.
 - Correct reclaim_request count adjustment for already-handled requests ([#973](https://github.com/apify/apify-sdk-python/pull/973)) ([86f4cd5](https://github.com/apify/apify-sdk-python/commit/86f4cd53d774e940954faa0b80b7ca5733d74fcf)) by [@vdusek](https://github.com/vdusek)
 - **scrapy:** Drop deprecated spider arg from Scrapy proxy middleware methods ([#977](https://github.com/apify/apify-sdk-python/pull/977)) ([49dd836](https://github.com/apify/apify-sdk-python/commit/49dd836c986b0e3bda4bb6485be8ad95d286cd82)) by [@vdusek](https://github.com/vdusek)
 - Redirect input key in all file-system key-value store operations ([#976](https://github.com/apify/apify-sdk-python/pull/976)) ([1fbdce2](https://github.com/apify/apify-sdk-python/commit/1fbdce27452f1cdc9580a53edd6de3ce9fe36a1d)) by [@vdusek](https://github.com/vdusek)
+- Respect explicit zero custom_after_sleep in metamorph and reboot ([#971](https://github.com/apify/apify-sdk-python/pull/971)) ([e8cda0a](https://github.com/apify/apify-sdk-python/commit/e8cda0a80339a21ce94cc382bd042509052ce1bf)) by [@vdusek](https://github.com/vdusek)
 
 ### 🚜 Refactor