Add new fortran_captures_build_path toolchain issue.

issues.yml

@@ -1375,6 +1375,9 @@ captures_home_dir:
 captures_execution_time:
   description:
     Captures execution time, which may vary between builds.
+fortran_captures_build_path:
+  description: |
+    Contains paths to .f90 files or similar.
 golang_compiler_captures_build_path_in_binary:
   description: |
     The golang compiler embeds the source/build paths into binaries.