Bump ibm-cos-java-sdk from 2.11.2 to 2.12.1 in /fhir-parent

Bumps [ibm-cos-java-sdk](https://github.com/ibm/ibm-cos-sdk-java) from 2.11.2 to 2.12.1.
- [Release notes](https://github.com/ibm/ibm-cos-sdk-java/releases)
- [Changelog](https://github.com/IBM/ibm-cos-sdk-java/blob/master/CHANGELOG.md)
- [Commits](IBM/ibm-cos-sdk-java@2.11.2...2.12.1)

---
updated-dependencies:
- dependency-name: com.ibm.cos:ibm-cos-java-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

fhir-parent/pom.xml

@@ -479,7 +479,7 @@
             <dependency>
                 <groupId>com.ibm.cos</groupId>
                 <artifactId>ibm-cos-java-sdk</artifactId>
-                <version>2.11.2</version>
+                <version>2.12.1</version>
             </dependency>
             <dependency>
                 <groupId>com.github.stephenc.jcip</groupId>