build(deps): bump spring-boot-dependencies from 2.6.3 to 3.1.1

Bumps [spring-boot-dependencies](https://github.com/spring-projects/spring-boot) from 2.6.3 to 3.1.1.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.3...v3.1.1)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

dhis2-to-fhir-bundle-datasonnet/pom.xml

@@ -18,7 +18,7 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <version>2.6.3</version>
+                <version>3.1.1</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>

dhis2-to-fhir-bundle/pom.xml

@@ -18,7 +18,7 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <version>2.6.3</version>
+                <version>3.1.1</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>

fhir-esavi-paho/pom.xml

@@ -18,7 +18,7 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <version>2.6.3</version>
+                <version>3.1.1</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>