Bump yamllint from 1.25.0 to 1.26.0 in /.github/workflows (#362)

Author: dependabot[bot]

.github/workflows/requirements_molecule.txt

@@ -1,6 +1,6 @@
 ansible-base==2.10.5
 ansible==2.10.6
 ansible-lint==4.3.7
-yamllint==1.25.0
+yamllint==1.26.0
 molecule[docker]==3.2.3
 docker==4.4.1

CHANGELOG.md

@@ -11,7 +11,7 @@ ENHANCEMENTS:
 *   Only run GitHub actions Galaxy CI/CD workflow when a new release is published.
 *   Specify GitHub actions Ubuntu release.
 *   Update list of supported platforms.
-*   Update Ansible base to `2.10.5`, Ansible to `2.10.6` and Molecule to `3.2.3`.
+*   Update Ansible base to `2.10.5`, Ansible to `2.10.6`, Molecule to `3.2.3` and yamllint to `1.26.0`.
 
 ## 0.19.1 (January 11, 2021)