chore: bump oxsecurity/megalinter from 7.3.0 to 7.4.0 #1765

Job	Run time
tflint	14s
MegaLinter	3m 50s
tfsec PR commenter	16s
Verify examples (1.3.9, runner-default)	17s
kics	1m 51s
Verify examples (1.3.9, runner-docker)	24s
Verify module (1.3.9)	21s
Verify examples (1.3.9, runner-multi-region)	28s
Verify examples (1.3.9, runner-pre-registered)	20s
Verify examples (1.3.9, runner-public)	39s
Verify examples (1.3.9, runner-certificates)	28s
Verify examples (latest, runner-default)	19s
Verify examples (latest, runner-docker)	25s
Verify examples (latest, runner-multi-region)	29s
Verify examples (latest, runner-pre-registered)	31s
Verify examples (latest, runner-public)	30s
Verify examples (latest, runner-certificates)	21s
	11m 43s

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