CI: ignore parse errors in gcovr
`gcovr 7.0` used by CI has a bug: it cannot parse line numbers \>9999.
One of our source files (rdopt.c) has 12K+ lines, so is affected by this bug.
We avoid this bug by ignoring parsing erros in `gcovr`.
Fixes coverage report generation and closes #756
diff --git a/.gitlab/ci_nightly.yml b/.gitlab/ci_nightly.yml
index 9e9d37b..2a5854b 100644
--- a/.gitlab/ci_nightly.yml
+++ b/.gitlab/ci_nightly.yml
@@ -53,6 +53,7 @@
- ./test_libaom
- >-
gcovr
+ --gcov-ignore-parse-errors
--gcov-executable gcov-14
--exclude ../third_party --exclude _deps --exclude abseil-cpp --exclude
benchmark --exclude cpuinfo --exclude eigen --exclude farmhash --exclude