jlpm run integrity needs to be run twice

[krassowski]

Running jlpm run integrity when a new dependency was added adds it at the end of tsconfig.json lists. This leads the tests to fail. Further, the output is not aligned with prettier which changes it again. A contributor needs to run:

jlpm run integrity
prettier # (e.g. from pre-commit)
jlpm run integrity
pretttier

This can lead to a total of six commands and is especially erogenous when run in environments where CI is not available.