CAMEL-23450: Remove unmaintained junit-toolbox from camel-grpc and camel-thrift tests

[rkdfx]

Description

com.googlecode.junit-toolbox has had no release since 2017 and was used only by the concurrent tests in camel-grpc and camel-thrift. Replaced MultithreadingTester/ RunnableAssert with a small ExecutorService-based helper matching the existing idiom with same behaviour . Also removed the dependency from both poms and the version property in parent/pom.xml.

Target

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Tracking

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Apache Camel coding standards and style

• I checked that each commit in the pull request has a meaningful subject line and body.

• I have run mvn clean install -DskipTests locally from root folder and I have committed all auto-generated changes.

[github-actions]

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[github-actions]

🧪 CI tested the following changed modules:

• components/camel-grpc
• components/camel-thrift
• parent

✅ POM dependency changes: targeted tests included

Changed properties: junit-toolbox-version

Modules affected by dependency changes (2)

• :camel-grpc
• :camel-thrift

All tested modules (9 modules)

• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: TUI
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container
• Camel :: Thrift
• Camel :: YAML DSL :: Validator
• Camel :: YAML DSL :: Validator Maven Plugin
• Camel :: gRPC

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