The script used to identify and update the change is added into the GitHub
workflows script directory. A workflow action can be created to trigger the
script to update the headers on the first of every new year. Possibly a task for
a consequent PR.
First, change read syntax for anonymous functions currently written '(lambda to
instead just be (lambda; otherwise this raises a warning.
Next, while we're at it, change all instances of #'(lambda to just (lambda,
since the two are equivalent and the latter is more concise (excepting anything
in core/libs or in /local/ subdirs of layers)
https://www.gnu.org/software/emacs/manual/html_node/elisp/Anonymous-Functions.html#index-_0023_0027-syntax
