build: pin -std=c11 for instrument-hooks core.c #513

Job	Run time
toolchain-detection-tests	4s
tests	22s
bazel-integration-tests (memory, ubuntu-latest)	2m 4s
macos-walltime-bazel-test	6m 24s
cmake-integration-tests (off, ubuntu-latest)	1m 8s
bazel-integration-tests (simulation, ubuntu-latest)	1m 33s
cmake-build (ubuntu-latest, off)	57s
cmake-build (ubuntu-latest, walltime)	1m 5s
cmake-build (windows-latest, walltime)	2m 53s
bazel-build (ubuntu-latest, off, 8.4.2)	33s
bazel-build (windows-latest, off, 9.0.0-pre.20250921.2)	1m 28s
cmake-integration-tests (memory, ubuntu-latest)	1m 17s
lint	9s
bazel-build (ubuntu-latest, walltime, 7.6.2)	39s
cmake-integration-tests (walltime, codspeed-macro)	7m 42s
bazel-build (windows-latest, off, 7.6.2)	1m 43s
bazel-build (windows-latest, off, 8.4.2)	1m 50s
bazel-build (ubuntu-latest, walltime, 8.4.2)	31s
cmake-build (windows-latest, off)	2m 18s
bazel-build (ubuntu-latest, off, 7.6.2)	32s
bazel-build (windows-latest, walltime, 7.6.2)	1m 50s
bazel-build (ubuntu-latest, off, 9.0.0-pre.20250921.2)	1m 15s
bazel-build (windows-latest, walltime, 9.0.0-pre.20250921.2)	1m 30s
bazel-build (windows-latest, walltime, 8.4.2)	1m 51s
bazel-integration-tests (walltime, codspeed-macro)	7m 38s
macos-walltime-cmake-test	6m 45s
bazel-build (ubuntu-latest, walltime, 9.0.0-pre.20250921.2)	1m 3s
bazel-integration-tests (off, ubuntu-latest)	31s
cmake-integration-tests (simulation, ubuntu-latest)	1m 50s
	59m 25s

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