Bump protobuf-java from 2.6.1 to 3.21.4 in /java

[dependabot]

Bumps protobuf-java from 2.6.1 to 3.21.4.

Release notes

Sourced from protobuf-java's releases.

Protocol Buffers v3.20.1

PHP

• Fix building packaged PHP extension (#9727)
• Fixed composer.json to only advertise compatibility with PHP 7.0+. (#9819)

Ruby

• Disable the aarch64 build on macOS until it can be fixed. (#9816)

Other

• Fix versioning issues in 3.20.0

Protocol Buffers v3.20.1-rc1

#PHP

• Fix building packaged PHP extension (#9727)

#Other

• Fix versioning issues in 3.20.0

Protocol Buffers v3.20.0

2022-03-25 version 3.20.0 (C++/Java/Python/PHP/Objective-C/C#/Ruby/JavaScript)

Ruby

• Dropped Ruby 2.3 and 2.4 support for CI and releases. (#9311)
• Added Ruby 3.1 support for CI and releases (#9566).
• Message.decode/encode: Add recursion_limit option (#9218/#9486)
• Allocate with xrealloc()/xfree() so message allocation is visible to the Ruby GC. In certain tests this leads to much lower memory usage due to more frequent GC runs (#9586).
• Fix conversion of singleton classes in Ruby (#9342)
• Suppress warning for intentional circular require (#9556)
• JSON will now output shorter strings for double and float fields when possible without losing precision.
• Encoding and decoding of binary format will now work properly on big-endian systems.
• UTF-8 verification was fixed to properly reject surrogate code points.
• Unknown enums for proto2 protos now properly implement proto2's behavior of putting such values in unknown fields.

Java

• Revert "Standardize on Array copyOf" (#9400)
• Resolve more java field accessor name conflicts (#8198)
• Don't support map fields in DynamicMessage.Builder.{getFieldBuilder,getRepeatedFieldBuilder}
• Fix parseFrom to only throw InvalidProtocolBufferException
• InvalidProtocolBufferException now allows arbitrary wrapped Exception types.
• Fix bug in FieldSet.Builder.mergeFrom
• Flush CodedOutputStream also flushes underlying OutputStream
• When oneof case is the same and the field type is Message, merge the subfield. (previously it was replaced.)’
• Add @​CheckReturnValue to some protobuf types
• Report original exceptions when parsing JSON

... (truncated)

Commits

• c9869dc Updating version.json and repo version numbers to: 21.4
• c254825 Reduce the required alignment of ArenaString from 8 to 4 (#10298)
• ddb21b2 Update version.json to: 21.4-dev (#10299)
• 4e7c56c Update developer username in package.xml (#10297)
• e783536 Update the release date in package.xml (#10295)
• 4d2d935 Merge pull request #10289 from protocolbuffers/21.x-202207202258
• b1eb126 Updating version.json and repo version numbers to: 21.3
• 0025376 Upgrade upb and update CHANGES.txt (#10286)
• c8b4ef2 [Bazel] Add back a filegroup for :well_known_protos (#10279)
• f049e5f Update version.json to: 21.3-dev (#10275)
• Additional commits viewable in compare view

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[codecov-commenter]

Codecov Report

Merging #64 (e63cf5f) into master (3304bfc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #64   +/-   ##
=======================================
  Coverage   68.41%   68.41%           
=======================================
  Files          99       99           
  Lines       11466    11466           
=======================================
  Hits         7845     7845           
  Misses       3621     3621           

Flag	Coverage Δ
singa-cpp	60.74% <ø> (ø)
singa-python	73.42% <ø> (ø)

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[dependabot]

Superseded by #65.