package.json: bump esbuild version to 0.19.1

[tomasmatus]

currently building on a fresh main fails with the following error:

❯ make
# if it exists already, npm install won't update it; force that so that we always get up-to-date packages
rm -f package-lock.json
# unset NODE_ENV, skips devDependencies otherwise
env -u NODE_ENV npm install
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: cockpit-ostree@undefined
npm ERR! Found: [email protected]
npm ERR! node_modules/esbuild
npm ERR!   dev esbuild@"^0.18.6" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer esbuild@"^0.19.1" from [email protected]
npm ERR! node_modules/esbuild-sass-plugin
npm ERR!   dev esbuild-sass-plugin@"^2.10.0" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! 
npm ERR! For a full report see:
npm ERR! /home/tmatus/.npm/_logs/2023-08-15T12_42_20_809Z-eresolve-report.txt

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/tmatus/.npm/_logs/2023-08-15T12_42_20_809Z-debug-0.log
make: *** [Makefile:192: package-lock.json] Error 1

[tomasmatus]

image refresh now fails because of this