Update changelog for 2.20.1

Author: Dave Bartolomeo

CHANGELOG.md

@@ -16,6 +16,19 @@
      checklist for a CLI release, you can edit here. But then
      you know what to do).
 -->
+## Release 2.20.1 (2025-01-09)
+
+### Improvements
+
+- Automatic installation of dependencies for C++ autobuild is now supported on Ubuntu 24.04.
+
+- The CLI will now warn if it detects that it is installed in a
+  location where it is likely to cause performance issues. This
+  includes: user home, desktop, downloads, or the file system root.
+
+  You can avoid this warning by setting the `CODEQL_ALLOW_INSTALLATION_ANYWHERE`
+  environment variable to `true`.
+
 ## Release 2.20.0 (2024-12-09)
 
 ### Known issues
@@ -618,7 +631,7 @@
 
 - Fixed an issue where CodeQL would sometimes incorrectly report that no files
   were scanned when running on Windows.
-  This affected the human-readable summary produced by `codeql database analyze`
+  This affected the human-readable summary produced by `codeql database analyze`
   and `codeql database interpret-results`, but did not impact the file coverage
   information produced in the SARIF output and displayed on the tool status page.
 - When analyzing Swift codebases, CodeQL build tracing will now ignore the