update gitignore
update gitignore


Former-commit-id: 44f32d2476a6a8f8089de71e973a531c341b96ad
InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service