chore(main): release protocol/go 0.28.0 (#3409)

🤖 I have created a release *beep* *boop*
---


##
[0.28.0](protocol/go/v0.27.0...protocol/go/v0.28.0)
(2026-04-28)


### Features

* **sdk:** add shorthand enum constants for policy types
([#3408](#3408))
([c6f18cb](c6f18cb))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: opentdf-automation[bot] <149537512+opentdf-automation[bot]@users.noreply.github.com>

Author: opentdf-automation[bot]

.github/release-please/release-please-manifest.json

@@ -4,7 +4,7 @@
   "lib/flattening": "0.1.3",
   "lib/identifier": "0.4.0",
   "otdfctl": "0.31.0",
-  "protocol/go": "0.27.0",
+  "protocol/go": "0.28.0",
   "sdk": "0.17.0",
   "service": "0.14.0"
 }

protocol/go/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.28.0](https://github.com/opentdf/platform/compare/protocol/go/v0.27.0...protocol/go/v0.28.0) (2026-04-28)
+
+
+### Features
+
+* **sdk:** add shorthand enum constants for policy types ([#3408](https://github.com/opentdf/platform/issues/3408)) ([c6f18cb](https://github.com/opentdf/platform/commit/c6f18cbcacc7fa285d834f504a6ce43b7363295d))
+
 ## [0.27.0](https://github.com/opentdf/platform/compare/protocol/go/v0.26.0...protocol/go/v0.27.0) (2026-04-23)