build(deps): bump protoc from 3.14.0 to 3.15.5

[dependabot]

Bumps protoc from 3.14.0 to 3.15.5.

Release notes

Sourced from protoc's releases.

Protocol Buffers v3.15.5

Ruby

• Fixed quadratic memory use in array append (#8379)

PHP

• Fixed quadratic memory use in array append (#8379)

C++

• Do not disable RTTI by default in the CMake build (#8377)

Protocol Buffers v3.15.4

Ruby

• Fixed SEGV when users pass nil messages (#8363)
• Fixed quadratic memory usage when appending to arrays (#8364)

C++

• Create a CMake option to control whether or not RTTI is enabled (#8361)

PHP

• read_property() handler is not supposed to return NULL (#8362)

Protocol Buffers v3.15.3

Ruby

• Ruby <2.7 now uses WeakMap too, which prevents memory leaks. (#8341)

Protocol Buffers v3.15.2

Ruby

• Fix for FieldDescriptor.get(msg) (#8330)

C++

• Fix PROTOBUF_CONSTINIT macro redefinition (#8323)

Protocol Buffers v3.15.1

Ruby

• Bugfix for Message.[] for repeated or map fields (#8313)
• Fix for truncating behavior when converting Float to Duration (#8320)

C++

• Small fixes for MinGW and for C++20 with GCC (#8318)

Protocol Buffers v3.15.0

Protocol Compiler

• Optional fields for proto3 are enabled by default, and no longer require the --experimental_allow_proto3_optional flag.

C++

• MessageDifferencer: fixed bug when using custom ignore with multiple unknown fields
• Use init_seg in MSVC to push initialization to an earlier phase.
• Runtime no longer triggers -Wsign-compare warnings.

... (truncated)

Commits

• 4fff47a Update protobuf version
• 5702d51 Updated CHANGES.txt and PHP release notes for 3.15.5
• b9a036b Do not disable RTTI by default in the CMake build
• 72b02b5 Merge pull request #8379 from haberman/quadratic-mem-fix
• 9b5e357 Fixed quadratic memory use in array append for PHP and Ruby.
• fd8aabf Update protobuf version
• e5c067f Updated CHANGES.txt and PHP changelog for 3.15.4 release
• aa41d90 read_property() handler is not supposed to return NULL
• cf7d81f Merge pull request #8363 from haberman/ruby-nil-fix
• 7d63b99 Removed compatibility test that tries to append "nil" to repeated field.
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #10 (1066a86) into master (983224c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #10   +/-   ##
=========================================
  Coverage     94.02%   94.02%           
  Complexity       17       17           
=========================================
  Files             6        6           
  Lines            67       67           
  Branches          6        6           
=========================================
  Hits             63       63           
  Misses            4        4           

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[dependabot]

Superseded by #11.