build(deps): bump com.typesafe.play:play_2.12 from 2.8.20 to 2.8.21

Bumps [com.typesafe.play:play_2.12](https://github.com/playframework/playframework) from 2.8.20 to 2.8.21.
- [Release notes](https://github.com/playframework/playframework/releases)
- [Commits](playframework/playframework@2.8.20...2.8.21)

---
updated-dependencies:
- dependency-name: com.typesafe.play:play_2.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -89,7 +89,7 @@
         <dependency.checkstyle.version>10.12.4</dependency.checkstyle.version>
         <dependency.slfj.version>2.0.9</dependency.slfj.version>
         <dependency.servlet-api.version>4.0.1</dependency.servlet-api.version>
-        <dependency.play.version>2.8.20</dependency.play.version>
+        <dependency.play.version>2.8.21</dependency.play.version>
         <dependency.spring.version>5.3.23</dependency.spring.version>
         <dependency.jackson.version>2.15.0</dependency.jackson.version>
         <dependency.fluent-hc.version>4.5.14</dependency.fluent-hc.version>