chore: update AWF_VERSION to 0.25.28 (#302)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]

src/compile/common.rs

@@ -445,7 +445,7 @@ pub const DEFAULT_POOL: &str = "AZS-1ES-L-MMS-ubuntu-22.04";
 /// Version of the AWF (Agentic Workflow Firewall) binary to download from GitHub Releases.
 /// Update this when upgrading to a new AWF release.
 /// See: https://github.com/github/gh-aw-firewall/releases
-pub const AWF_VERSION: &str = "0.25.26";
+pub const AWF_VERSION: &str = "0.25.28";
 
 /// Prefix used to identify agentic pipeline YAML files generated by ado-aw.
 pub const HEADER_MARKER: &str = "# @ado-aw";