Add changelog entry

Author: award999

CHANGELOG.md

@@ -7,6 +7,10 @@
 - Added code lenses to run suites/tests, configurable with the `swift.showTestCodeLenses` setting ([#1698](https://github.com/swiftlang/vscode-swift/pull/1698))
 - New `swift.excludePathsFromActivation` setting to ignore specified sub-folders from being activated as projects ([#1693](https://github.com/swiftlang/vscode-swift/pull/1693))
 
+### Fixed
+
+- Provide the Swift environment variables when resolving a `swift-plugin` task ([#1727](https://github.com/swiftlang/vscode-swift/pull/1727))
+
 ## 2.8.0 - 2025-07-14
 
 ### Added