Minor discrepancy between packed 2020a.json and its meta file

[jdatskuid]

Looks like the packed 2020a.json file was built with an older meta file.

In the 2020a.json meta file, Greenland is associated with the following time zones:

"GL": {
	"name": "Greenland",
	"abbr": "GL",
	"zones": [
		"America/Nuuk",
		"America/Danmarkshavn",
		"America/Scoresbysund",
		"America/Thule"
	]
},

But in the 2020a.json packed file we can see that instead of America/Nuuk, Greenland is associated with America/Godthab:

"GL|America/Godthab America/Danmarkshavn America/Scoresbysund America/Thule",

I suspect that the 2020a file was built with the 2019c meta file, as Greenland was not yet associated with America/Nuuk in that file:

"GL": {
	"name": "Greenland",
	"abbr": "GL",
	"zones": [
		"America/Godthab",
		"America/Danmarkshavn",
		"America/Scoresbysund",
		"America/Thule"
	]
},

Note that this does not appear to be a problem in the latest.json packed file (which is versioned as "2020a"):

"GL|America/Nuuk America/Danmarkshavn America/Scoresbysund America/Thule",

[gilmoreorless]

Related: #836

[ichernev]

I believe I fixed that in 0.5.36, the data pipeline was messed up, esp around metadata, because the metadata was used but not yet generated, so whatever was latest.js that got picked up (pretty messed up).