June dependency upgrades

[simonbasle]

This is a 3.4.x combination of dependency upgrades originally flagged by Renovate in the main branch

• Update dependency org.assertj:assertj-core to v3.23.1, supersedes and closes Update dependency org.assertj:assertj-core to v3.23.1 #3058
• Update gradle/gradle-build-action v2 digest, supersedes and closes Update gradle/gradle-build-action digest to e88ed3e #3050
• Update plugin spotless to v6.7.0, supersedes and closes Update plugin spotless to v6.7.0 #3040
• Update dependency org.mockito:mockito-core to v4.6.1, supersedes and closes Update dependency org.mockito:mockito-core to v4.6.1 #3056
• Update plugin bnd to v6.3.0, supersedes and closes Update plugin bnd to v6.3.0 #3061
• Update plugin com.gradle.enterprise to v3.10.1, supersedes and closes Update plugin com.gradle.enterprise to v3.10.1 #3048
• Update plugin artifactory to v4.28.3, supersedes and closes Update plugin artifactory to v4.28.3 #3041

[reactorbot]

@simonbasle this PR seems to have been merged on a maintenance branch, please ensure the change is merge-forwarded to intermediate maintenance branches and up to main 🙇