Update protobuf-java to 4.26.0

[scala-steward]

About this PR

📦 Updates com.google.protobuf:protobuf-java from 3.25.3 to 4.26.0 ⚠

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Add this to your `.scala-steward.conf` file to ignore future updates of this dependency: ``` updates.ignore = [ { groupId = "com.google.protobuf", artifactId = "protobuf-java" } ] ``` Or, add this to slow down future updates of this dependency: ``` dependencyOverrides = [{ pullRequests = { frequency = "30 days" }, dependency = { groupId = "com.google.protobuf", artifactId = "protobuf-java" } }] ```

^{labels: library-update, early-semver-major, semver-spec-major, commit-count:1}

[scala-steward]

Superseded by #474.