Update libsbp codeowners [AP-2193] (#1427) #1548

Job	Run time
Test Big Endian	16m 32s
macOS	15m 44s
Ubuntu 18.04 (Build: Debug, Compilers: gcc-6/g++-6, Shared Library: true)	12m 7s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	9m 22s
Ubuntu 18.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	11m 4s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: true)	15m 54s
Ubuntu 18.04 (Build: Release, Compilers: gcc-6/g++-6, Shared Library: false)	17m 42s
ASAN	7m 45s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	20m 18s
Bazel	5m 17s
Ubuntu 18.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	14m 51s
UBSAN	7m 52s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: true)	19m 44s
Windows 2019 (Generator: MinGW Makefiles, Shared Library: false)	18m 46s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: true)	9m 11s
Windows 2019 (Generator: Visual Studio 16 2019, Shared Library: false)	9m 22s
	3h 31m 31s

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