ci: enable valgrind for build

[alfredh]

No description provided.

[sreimers]

We have a dedicated valgrind check .github/workflows/valgrind.yml how is this different?

[alfredh]

this is just a test for now ...

found some new errors:

est_sipsess: TEST_ERR: /home/runner/work/re/re/test/sipsess.c:1275: (Connection timed out [110])
test: test_sipsess_update_uac: test failed (Connection timed out [110])
Format: "%u<-- SIZE ERROR
retest: /home/runner/work/re/re/src/fmt/print.c:500: vhprintf: Assertion `0 && "RE_VA_ARG: arg is not compatible"' failed.
Error: Signal (6) ./build/test/retest(+0xb0c6f) [0x1b8c6f]
	btrace at /home/runner/work/re/re/include/re_btrace.h:23
./build/test/retest(+0xb0cd7) [0x1b8cd7]
	signal_handler at /home/runner/work/re/re/src/main/init.c:41
/lib/x86_64-linux-gnu/libc.so.6(+0x43090) [0x4d97090]
	verify_after_sdp_exchange at /home/runner/work/re/re/test/ice.c:570
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb) [0x4d9700b]
	?? ??:0
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b) [0x4d76859]
	?? ??:0
/lib/x86_64-linux-gnu/libc.so.6(+0x22729) [0x4d76729]
	?? ??:0
/lib/x86_64-linux-gnu/libc.so.6(+0x33fd6) [0x4d87fd6]
	test_fmt_regex at /home/runner/work/re/re/test/fmt.c:479
./build/test/retest(+0x9a10b) [0x1a210b]
	vhprintf at /home/runner/work/re/re/src/fmt/print.c:503
./build/test/retest(re_vfprintf_s+0x69) [0x1a24a4]
	?? ??:0
./build/test/retest(re_vprintf_s+0x31) [0x1a252d]
	?? ??:0
./build/test/retest(_re_printf_s+0xb5) [0x1a2d60]
	?? ??:0
./build/test/retest(test_multithread+0x342) [0x17cd36]
	?? ??:0

[sreimers]

-t retest