Warnings in gitlab pipeline due to uncommon locale on runner(?)

For the tutorials pipeline, I'm getting repeated warnings like:

msggrep: warning: Locale charset "ANSI_X3.4-1968" is different from
                  input file charset "UTF-8".
                  Output of 'msggrep' might be incorrect.
                  Possible workarounds are:
                  - Set LC_ALL to a locale with encoding UTF-8.
                  - Convert the translation catalog to ASCII using 'msgconv',
                    then apply 'msggrep',
                    then convert back to UTF-8 using 'msgconv'.

Also, is the following warning still accurate?

WARNING: SVG input document uses 46 flow text elements, which won't render on browsers!

See https://gitlab.com/inkscape/inkscape-docs/documentation/-/jobs/421223349