Bump io.swagger:swagger-annotations from 1.6.11 to 1.6.12 (#5858)

Bumps io.swagger:swagger-annotations from 1.6.11 to 1.6.12.

---
updated-dependencies:
- dependency-name: io.swagger:swagger-annotations
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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build.gradle

@@ -72,7 +72,7 @@ ext {
         "velocity"            : "org.apache.velocity:velocity-engine-core:2.3",
         "freemarker"          : "org.freemarker:freemarker:2.3.32",
         "beetl"               : "com.ibeetl:beetl:3.15.10.RELEASE",
-        "swagger-annotations" : "io.swagger:swagger-annotations:1.6.11",
+        "swagger-annotations" : "io.swagger:swagger-annotations:1.6.12",
         "enjoy"               : "com.jfinal:enjoy:5.1.3",
         "logback-classic"     : "ch.qos.logback:logback-classic:1.4.11",
     ]