[REMOVAL] Drop C++11 support #8585

Job	Run time
Bazel noexcept	17m 54s
Bazel asan config	11m 29s
Bazel nortti	19m 10s
Bazel on MacOS	24m 4s
Bazel	23m 5s
Bazel with async export	20m 27s
Bazel tsan config	20m 52s
Bazel valgrind	23m 40s
Bazel with external abseil	23m 37s
Benchmark	12m 34s
CMake test (with abseil)	6m 35s
CMake clang 14 (maintainer mode, async)	19m 50s
CMake clang 14 (maintainer mode, sync)	17m 16s
CMake do not install test (with otlp-exporter)	19m 59s
CMake gcc 12 (maintainer mode, async)	11m 3s
CMake gcc 12 (maintainer mode, sync)	11m 25s
CMake install test (with abseil)	6m 24s
CMake test (with modern protobuf,grpc and abseil)	29m 5s
CMake msvc (maintainer mode)	16m 23s
CMake test (with opentracing-shim)	6m 46s
CMake test (build shared libraries with otlp-exporter and static gRPC)	19m 13s
CMake test (with otlp-exporter)	20m 28s
CMake test (without otlp-exporter)	9m 15s
CMake C++14 test(GCC)	8m 18s
CMake C++17 test(GCC)	9m 36s
CMake C++20 test(Clang with libc++)	11m 3s
CMake C++20 test(GCC)	12m 35s
CMake test (without otlp-exporter and with async export)	7m 54s
Code coverage	13m 29s
Copyright	8s
DocFX check	1m 14s
Format	16s
markdown-lint	10s
misspell	8s
Plugin -> CMake	1m 28s
CMake -> exporter proto	20m 29s
Bazel Windows	46m 55s
Plugin -> CMake Windows	13m 14s
CMake (With async export) -> exporter proto	24m 20s
CMake -> exporter proto (Build as DLL)	21m 57s
	9h 43m 48s

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