Bump seata.version from 1.6.1 to 1.8.0 (#14692)

Bumps `seata.version` from 1.6.1 to 1.8.0.

Updates `io.seata:seata-spring-boot-starter` from 1.6.1 to 1.8.0
- [Release notes](https://github.com/seata/seata/releases)
- [Changelog](https://github.com/apache/incubator-seata/blob/2.x/CHANGELOG.md)
- [Commits](apache/incubator-seata@v1.6.1...v1.8.0)

Updates `io.seata:seata-core` from 1.6.1 to 1.8.0
- [Release notes](https://github.com/seata/seata/releases)
- [Changelog](https://github.com/apache/incubator-seata/blob/2.x/CHANGELOG.md)
- [Commits](apache/incubator-seata@v1.6.1...v1.8.0)

---
updated-dependencies:
- dependency-name: io.seata:seata-spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.seata:seata-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

dubbo-dependencies-bom/pom.xml

@@ -137,7 +137,7 @@
     <tomcat_embed_version>8.5.100</tomcat_embed_version>
     <nacos_version>2.4.2</nacos_version>
     <sentinel.version>1.8.6</sentinel.version>
-    <seata.version>1.6.1</seata.version>
+    <seata.version>1.8.0</seata.version>
     <grpc.version>1.66.0</grpc.version>
     <grpc_contrib_verdion>0.8.1</grpc_contrib_verdion>
     <jprotoc_version>1.2.2</jprotoc_version>