Add back CODECOV_TOKEN

Author: danielhollas

.github/workflows/gfortran.yml

@@ -14,6 +14,13 @@ env:
   ABIN_FFLAGS: -O0 -fopenmp --coverage -fprofile-abs-path -ffpe-trap=invalid,zero,overflow,denormal -fimplicit-none -Wall -Wno-integer-division -Wno-maybe-uninitialized
   ABIN_LDLIBS: --coverage
   OPTIMIZED_FFLAGS: -O3 -fopenmp -fimplicit-none -Wall -Wno-integer-division
+  # NOTE: It would be safer to only pass the secret token to the codecov-upload action,
+  # but the impact of this token leaking is small anyway.
+  # NOTE: It appears that even with this token there are issues,
+  # so for now we let the CI succeed even if the upload fails.
+  # Reported by many people also at:
+  # https://github.com/codecov/codecov-action/issues/926
+  CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
   FORCE_COLOR: 1
 
 jobs: