golangci: enable line length linter #2077

Job	Run time
backend build on ubuntu-latest	3m 31s
frontend tests on ubuntu-latest	2m 16s
check commits	2m 34s
cross compilation (i386, linux-386)	3m 16s
backend build on windows-latest	13m 42s
frontend tests on windows-latest	8m 11s
backend build on macOS-latest	5m 32s
frontend tests on macOS-latest	2m 48s
integration test	12m 48s
lint	2m 2s
RPC proto compilation check	3m 41s
cross compilation (amd64, darwin-amd64 linux-amd64 windows-amd64)	8m 7s
check release notes updated	2s
cross compilation (arm, darwin-arm64 linux-armv6 linux-armv7 linux-arm64)	10m 14s
Sqlc check	3m 2s
run unit tests (unit-race)	4m 5s
run unit tests (unit)	58s
	1h 26m 49s

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