Merge branch '2.0.0' into 'master'

2.0.0 release(push)

See merge request exchange/code/sdk/bitmart-java-sdk-api!18

Author: BitMartDeveloper

.github/workflows/release.yml

@@ -9,9 +9,9 @@ jobs:
     steps:
       # Checkout source code
       - name: Checkout source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up Apache Maven Central
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v3
         with: # running setup-java again overwrites the settings.xml
           distribution: 'adopt' # See 'Supported distributions' for available options
           java-version: '8'