Update cimg/openjdk Docker tag to v21.0.5 (#345)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| cimg/openjdk | docker | patch | `21.0.2` -> `21.0.5` |

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.circleci/config.yml

@@ -7,7 +7,7 @@ orbs:
 executors:
   jdk:
     docker:
-      - image: cimg/openjdk:21.0.2
+      - image: cimg/openjdk:21.0.5
   jdk-machine:
     machine:
       image: ubuntu-2204:current