build(deps): bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v4...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/sdk-release-checksums.yml

@@ -29,7 +29,7 @@ jobs:
           chmod +x scripts/sdk-release-checksums.sh
           ./scripts/sdk-release-checksums.sh --no-mvn --output dist/sdk-release --native-path "${{ github.workspace }}/native/build"
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: sdk-release-${{ github.ref_name }}
           path: |

services/pom.xml

@@ -20,7 +20,7 @@
         <java.version>17</java.version>
         <spring-boot.version>4.0.0</spring-boot.version>
         <!-- 平台数据访问：PostgreSQL 15 + MyBatis-Plus（Spring Boot 4 用 boot4-starter） -->
-        <mybatis-plus.version>3.5.16</mybatis-plus.version>
+        <mybatis-plus.version>3.5.15</mybatis-plus.version>
     </properties>
 
     <!--