fix(deps): update swaggercoreversion to v2.2.26 (#965)

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(cherry picked from commit 7619323)
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build.gradle

@@ -36,7 +36,7 @@ buildscript {
         isSameMajorVersion = opensearch_version.split("\\.")[0] == bwcVersionShort.split("\\.")[0]
         swaggerVersion = "2.1.23"
         jacksonVersion = "2.18.1"
-        swaggerCoreVersion = "2.2.25"
+        swaggerCoreVersion = "2.2.26"
 
     }