ci: fix alpine version checker & remove v7 branch PRs (#456) #385

Job	Run time
go-versions / go-versions	8s
Trivy Scan of Docker Image	4m 57s
integration-test / Integration Tests - staging (Go 1.23.2)	4m 11s
Go 1.23.2 / Benchmarks	31s
Go 1.22.8 / Benchmarks	25s
Go 1.22.8 / Unit Tests	1m 8s
Go 1.23.2 / Unit Tests	1m 8s
	12m 28s

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