Update git submodules

* Update docs/submodules/msb/swagger-sdk.git from branch 'master'
  to 96a3e31fb17f63bce9cb9ab28a5f081b146f7f09
  - update version to 1.2.6
    
    Issue-ID: MSB-463
    Signed-off-by: Huabing Zhao <zhao.huabing@zte.com.cn>
    Change-Id: I744fdbf8300ce21f7fc9cd678f8dca712648247b
    
1 file changed