Exclude protobuf 4.x from armeria-grpc module

[jrhee17]

Motivation:

With the recent release of 1.31.0, we received a report that protobuf 4 has been included as an api dependency.
This is probably a mistake since 1) the community isn't ready for protobuf 4 2) it's usually safer to follow the protobuf version used by grpc-java.

The api configuration is a consumable configuration, which means it is difficult to detect these kind of issues directly.
However, by checking the runtime dependencies for tests we can infer whether a version is inadvertently bumped.

In order to detect such mishaps, I also propose that a failOnVersionConflict variant is added.
Because naively introducing failOnVersionConflict introduces many conflicts, I've added a variant which checks for specified dependencies only. (inspired by gradle/gradle#8813)

One limitation is that the dependencies task is not available when a failOnVersionConflict occurs. For this reason, once a failure due to a conflict occurs, it is encouraged to use the -PdebugDeps flag with the dependencies task.

e.g.

./gradlew :grpc:dependencies -PdebugDeps

Modifications:

• Excluded the protobuf-java dependency from protobuf-jackson
• Added a failOnVersionConflict method which checks version conflicts for specific dependencies only

Result:

• Closes New armeria release 1.31.0 contains dependency on protobuf-java 4.28.2 #5990

[github-actions]

🔍 Build Scan® (commit: 3121a66)

Job name	Status	Build Scan®
build-ubicloud-standard-8-jdk-8	✅	https://ge.armeria.dev/s/gwfugbhwe7322
build-ubicloud-standard-8-jdk-21-snapshot-blockhound	✅	https://ge.armeria.dev/s/siv3uheqkr7lu
build-ubicloud-standard-8-jdk-17-min-java-17-coverage	❌ (failure)	https://ge.armeria.dev/s/muaipfvzkbbm2
build-ubicloud-standard-8-jdk-17-min-java-11	✅	https://ge.armeria.dev/s/2txj3i2venspg
build-ubicloud-standard-8-jdk-17-leak	✅	https://ge.armeria.dev/s/6mtilzsk33q4g
build-ubicloud-standard-8-jdk-11	✅	https://ge.armeria.dev/s/vkjq4r7g2lwsy
build-macos-12-jdk-21	✅	https://ge.armeria.dev/s/fzq2lnswcyqke

[trustin]

Thanks a lot, @jrhee17!

[minwoox]

Thanks for adding the check. 👍

[ikhoon]

👍

[ikhoon]

@chokoswitch said protobuf-jackson would support protobuf 3 for a while: curioswitch/protobuf-jackson#34 (comment)