chore: bump version and correct license (#15)

perf: Use async client and multipart upload to avoid out of memory by @longjuan in #7
feat: add access style options to support minio binding domain names by @longjuan in #13
feat: check the file already exists before uploading by @longjuan in #11
```release-note
None
```

gradle.properties

@@ -1 +1 @@
-version=1.2.1-SNAPSHOT
+version=1.3.0-SNAPSHOT

src/main/resources/plugin.yaml

@@ -4,7 +4,7 @@ metadata:
   name: PluginS3ObjectStorage
 spec:
   enabled: true
-  version: 1.2.1
+  version: 1.3.0
   requires: ">=2.0.0"
   author:
     name: longjuan
@@ -16,4 +16,4 @@ spec:
   displayName: "对象存储（Amazon S3 协议）"
   description: "提供兼容 Amazon S3 协议的对象存储策略，兼容阿里云、腾讯云、七牛云等"
   license:
-    - name: "MIT"
+    - name: "GPL-3.0"