Bump fastjson from 1.2.72 to 1.2.73

Bumps [fastjson](https://github.com/alibaba/fastjson) from 1.2.72 to 1.2.73.
- [Release notes](https://github.com/alibaba/fastjson/releases)
- [Commits](https://github.com/alibaba/fastjson/compare/1.2.72...1.2.73)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -58,7 +58,7 @@ ext {
         "assertj-core"               : "org.assertj:assertj-core:3.16.1",
         "junit-jupiter-api"          : "org.junit.jupiter:junit-jupiter-api:${junitVersion}",
         "junit-jupiter-engine"       : "org.junit.jupiter:junit-jupiter-engine:${junitVersion}",
-        "fastjson"                   : "com.alibaba:fastjson:1.2.72",
+        "fastjson"                   : "com.alibaba:fastjson:1.2.73",
         "jackson"                    : "com.fasterxml.jackson.core:jackson-databind:2.11.1",
         "gson"                       : "com.google.code.gson:gson:2.8.6",
         "lagarto"                    : "org.jodd:jodd-lagarto:5.1.5",