ci: reenable wastedassign linter #305

Job	Run time
go-linter	2m 58s
Unit Tests / ubuntu-latest / Go 1.20	1m 6s
E2E tests / awslogs / ubuntu-latest / Go 1.20	3m 34s
Unit Tests / windows-latest / Go 1.20	2m 1s
E2E tests / fluentd / ubuntu-latest / Go 1.20	1m 33s
Unit Tests / ubuntu-latest / Go 1.21	1m 4s
E2E tests / fluentd / ubuntu-latest / Go 1.21	1m 32s
Unit Tests / windows-latest / Go 1.21	2m 35s
E2E tests / splunk / ubuntu-latest / Go 1.20	2m 59s
E2E tests / awslogs / ubuntu-latest / Go 1.21	3m 30s
E2E tests / splunk / ubuntu-latest / Go 1.21	2m 53s
go-mod-tidy-check	7s
mdlint	16s
	26m 8s

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