It appears that the firefox-esr package is going to be upgraded to v68, which will not work with this badly-out-of-date version of noscript, probably the single most important browser extension available.
The current version is 11.0.3 : https://addons.mozilla.org/en-US/firefox/addon/noscript/versions/ Either these browser extension packages need to be updated much more frequently, or there needs to be some automatic mechanism for installing current versions, which does not depend on manual packaging. It seems like a script which would fetch the current version of any named browser extension from the Mozilla website, and install it to the standard Debian /usr/share/webext/ directory, would not be especially hard to write. In any case, please upgrade this important package to the current version, as it is now one year out-of-date, and does not work with current versions of Firefox.