Improve how geolocation DB files are downloaded/updated #1597

Job	Run time
static-analysis (8.3, cs)	38s
static-analysis (8.3, stan)	28s
static-analysis (8.3, openapi:validate)	16s
cli-tests / tests (8.3)	37s
cli-tests / tests (8.4)	45s
unit-tests / tests (8.3)	35s
api-tests / tests (8.3)	1m 26s
unit-tests / tests (8.4)	28s
api-tests / tests (8.4)	1m 8s
db-tests (maria) / db-tests (8.3)	22s
db-tests (maria) / db-tests (8.4)	25s
db-tests (ms) / db-tests (8.3)	1m 30s
db-tests (ms) / db-tests (8.4)	1m 13s
db-tests (mysql) / db-tests (8.3)	42s
db-tests (mysql) / db-tests (8.4)	34s
db-tests (postgres) / db-tests (8.3)	35s
db-tests (postgres) / db-tests (8.4)	23s
db-tests (sqlite:ci) / db-tests (8.3)	19s
db-tests (sqlite:ci) / db-tests (8.4)	21s
upload-coverage	0s
delete-artifacts	0s
	12m 45s

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