Update 1.11 CHANGELOG with 1.11.1 Release

[gallacher]

Description

The 1.11 changelog is missing the 1.11.1 release information so this PR is adding it.

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #

Checklist:

• [x] I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• [ ] I have verified that new and existing unit tests pass locally with my changes
• [ ] I have not allowed coverage numbers to degenerate
• [ ] I have maintained at least 90% code coverage
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have maintained backward compatibility

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• [ ] Test A
• [ ] Test B

[csmbot]

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