Bump pulsarVersion from 4.0.5 to 4.0.6

Bumps `pulsarVersion` from 4.0.5 to 4.0.6.

Updates `org.apache.pulsar:pulsar-client-all` from 4.0.5 to 4.0.6
- [Release notes](https://github.com/apache/pulsar/releases)
- [Commits](apache/pulsar@v4.0.5...v4.0.6)

Updates `org.apache.pulsar:pulsar-functions-api` from 4.0.5 to 4.0.6

---
updated-dependencies:
- dependency-name: org.apache.pulsar:pulsar-client-all
  dependency-version: 4.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.pulsar:pulsar-functions-api
  dependency-version: 4.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

spring-pulsar-sample-apps/sample-pulsar-functions/sample-signup-function/build.gradle

@@ -12,7 +12,7 @@ repositories {
 
 def versionCatalog = extensions.getByType(VersionCatalogsExtension).named("libs")
 // At Pulsar 4.0.6 things break related to jdk8 requirement - hardcoding at 4.0.5 for now
-def pulsarVersion = '4.0.5'
+def pulsarVersion = '4.0.6'
 
 dependencies {
 	implementation "org.apache.pulsar:pulsar-client-all:${pulsarVersion}"