docs: snapshot and changelog for v1.14.8a1 (#6223)

docs/edge/en/changelog.mdx

@@ -4,6 +4,28 @@ description: "Product updates, improvements, and bug fixes for CrewAI"
 icon: "clock"
 mode: "wide"
 ---
+<Update label="Jun 18, 2026">
+  ## v1.14.8a1
+
+  [View release on GitHub](https://github.com/crewAIInc/crewAI/releases/tag/1.14.8a1)
+
+  ## What's Changed
+
+  ### Features
+  - Add optional if expression to each.do steps
+
+  ### Bug Fixes
+  - Fix JSON crew issues
+
+  ### Documentation
+  - Update snapshot and changelog for v1.14.8a
+
+  ## Contributors
+
+  @joaomdmoura, @vinibrsl
+
+</Update>
+
 <Update label="Jun 17, 2026">
   ## v1.14.8a