Bump protobuf-java from 3.18.1 to 3.21.1

[dependabot[bot]]

Bumps protobuf-java from 3.18.1 to 3.21.1.

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

• e73ed16 Updating version.json and repo version numbers to: 21.1
• 5bbb8f7 Update upb commit to include fix for segmentation fault when instantiating fi...
• d4e1c66 Merge pull request #10047 from protocolbuffers/temp
• 3b029b1 Revert "Fix cmake install targets (#9822)" (#10060)
• 16a8680 Update upb commit/sha256 to include updated python wheel (#10058)
• f7e2e0b Remove Abseil dependency from CMake build (#10056)
• 30f4468 Add endian.h to includes list (#10057)
• 698d760 Update version.json to: 21.1-dev
• e7e8f04 Merge pull request #10044 from protocolbuffers/21.x-202205252102
• 7062d0a Updated changelog
• Additional commits viewable in compare view

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Superseded by #977.