Bump io.avaje:avaje-spi-service from 2.1 to 2.4

Bumps io.avaje:avaje-spi-service from 2.1 to 2.4.

---
updated-dependencies:
- dependency-name: io.avaje:avaje-spi-service
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -24,7 +24,7 @@
   <properties>
     <surefire.useModulePath>false</surefire.useModulePath>
     <nexus.staging.autoReleaseAfterClose>true</nexus.staging.autoReleaseAfterClose>
-    <spi.version>2.1</spi.version>
+    <spi.version>2.4</spi.version>
   </properties>
 
   <modules>