chore: publish v0.4.3 — include src/ in published packages

bun runtime resolves the 'bun' exports condition to ./src/index.ts,
but src/ was not in the files array so consumers got ENOENT.

packages/workflow-runtime/CHANGELOG.md

@@ -1,5 +1,14 @@
 # @uncaged/workflow-runtime
 
+## 0.4.3
+
+### Patch Changes
+
+- Include src/ in published packages so bun runtime can resolve the 'bun' exports condition.
+- Updated dependencies
+  - @uncaged/workflow-cas@0.4.3
+  - @uncaged/workflow-protocol@0.4.3
+
 ## 0.4.2
 
 ### Patch Changes

packages/workflow-runtime/package.json

@@ -1,7 +1,8 @@
 {
   "name": "@uncaged/workflow-runtime",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "files": [
+    "src",
     "dist",
     "package.json"
   ],