Prepare 0.21.3 release

Author: alessfg

.github/workflows/requirements/requirements_molecule.txt

@@ -1,6 +1,6 @@
 ansible-core==2.11.6
 jinja2==3.0.2
-ansible-lint==5.2.0
+ansible-lint==5.2.1
 yamllint==1.26.3
 molecule[docker]==3.5.2
 docker==5.0.3

CHANGELOG.md

@@ -1,11 +1,11 @@
 # Changelog
 
-## 0.21.3 (Unreleased)
+## 0.21.3 (October 25, 2021)
 
 ENHANCEMENTS:
 
-* Change Dependabot frequency from daily to weekly
-* Minor touch-up of GitHub actions workflows
+* Change Dependabot frequency from daily to weekly.
+* Minor touch-up of GitHub actions workflows.
 
 ## 0.21.2 (October 7, 2021)
 

CONTRIBUTING.md

@@ -51,7 +51,7 @@ To suggest an enhancement, please create an issue on GitHub with the label `enha
 * Fork the repo, create a branch, implement your changes, add any relevant Molecule tests, submit a PR when your changes are **tested** (using Molecule) and ready for review.
 * Fill in [our pull request template](https://github.com/nginxinc/ansible-role-nginx/blob/main/.github/pull_request_template.md).
 
-Note: if you’d like to implement a new feature, please consider creating a feature request issue first to start a discussion about the feature.
+Note: if you'd like to implement a new feature, please consider creating a feature request issue first to start a discussion about the feature.
 
 ## Code Guidelines