Release v1.3.6

What's Changed

• test: set env only for integration test by @JacksonTian in #76
• cleanup newEcsRAMRoleCredential method by @JacksonTian in #75
• Support sts for RAMRoleARNCredentialsProvider by @JacksonTian in #77
• improve ci for RAM role ARN by @JacksonTian in #79

Full Changelog: v1.3.5...v1.3.6