Update copyrights

src/core/httpcli/httpcli_security_connector.c

src/core/security/client_auth_filter.c

src/core/security/credentials.c

src/core/security/security_connector.c

src/core/security/security_connector.h

src/core/surface/init.c

src/core/transport/static_metadata.c

src/core/transport/static_metadata.h

src/php/ext/grpc/LICENSE

test/core/end2end/end2end_nosec_tests.c

test/core/end2end/end2end_tests.c

test/core/support/alloc_test.c

tools/distrib/clang_format_code.sh

...ckerfile/grpc_clang_format/clang_format_all_the_things.sh

tools/jenkins/build_docker_and_run_tests.sh

tools/run_tests/run_sanity.sh