[release/3.0] update for 3.0.3 (#15875)

Author: cuicheng01

README.md

@@ -40,6 +40,10 @@ PaddleOCR 3.0除了提供优秀的模型库外，还提供好学易用的工具
 
 ## 📣 最新动态
 
+2025.06.26: **PaddleOCR 3.0.3** 发布，包含：
+
+- Bug修复：修复`enable_mkldnn`参数不生效的问题，恢复CPU默认使用MKL-DNN推理的行为。
+
 🔥🔥2025.06.19: **PaddleOCR 3.0.2** 发布，包含：
 
 - **功能新增：**

README_en.md

@@ -44,6 +44,10 @@ In addition to providing an outstanding model library, PaddleOCR 3.0 also offers
 
 ## 📣 Recent updates
 
+#### **2025.06.26: Release of PaddleOCR 3.0.3**, includes:
+
+  - Bug Fix: Resolved the issue where the `enable_mkldnn` parameter was not effective, restoring the default behavior of using MKL-DNN for CPU inference.
+
 #### 🔥🔥**2025.06.19: Release of PaddleOCR 3.0.2, includes:**
 
 - **New Features:**