Use checkout to get single file rather than hardcoded curl

[tupaschoal]

Using the suggestion I gave in #3490 to avoid the hardcoded curl line to checkout a single file.

[github-actions]

Check results

For details click the build job and expand Run checks on the CI logs.

	Missing The translation is not added to translation file. (e.g. STR_9999 is in en-GB but is not available in given language)	Not needed The translation file contains entries that are not in en-GB and should be removed (e.g. STR_9999 exists in given language but is not in en-GB)	Same The translation and source string is exactly the same. (e.g. STR_9999 is Umbrella in both en-GB and given language). This may be desired in some cases (e.g. April is the same in English and German)
pt-BR	0	0	124

Other translations

	Missing The translation is not added to translation file. (e.g. STR_9999 is in en-GB but is not available in given language)	Not needed The translation file contains entries that are not in en-GB and should be removed (e.g. STR_9999 exists in given language but is not in en-GB)	Same The translation and source string is exactly the same. (e.g. STR_9999 is Umbrella in both en-GB and given language). This may be desired in some cases (e.g. April is the same in English and German)
ar-EG	323	0	1706
ca-ES	25	0	79
cs-CZ	49	0	130
da-DK	34	0	237
de-DE	20	0	132
en-US	3470	0	1
eo-ZZ	0	0	52
es-ES	0	0	149
fi-FI	147	0	81
fr-CA	3636	0	0
fr-FR	0	0	126
gl-ES	0	0	79
hu-HU	20	0	77
it-IT	35	0	121
ja-JP	147	0	100
ko-KR	0	0	77
nb-NO	232	0	153
nl-NL	0	0	170
pl-PL	31	0	85
ru-RU	0	0	101
sv-SE	25	0	144
tr-TR	558	0	91
uk-UA	228	0	698
vi-VN	77	0	101
zh-CN	60	0	22
zh-TW	96	0	90