chore: ensure action versions are pinned #517

Job	Run time
lint	13s
golden-tests	35s
ensure-actions-sha-pin	3s
integration-test (1.27.16, kong)	1m 51s
integration-test (1.27.16, ingress)	1m 50s
lint-test (1.31.4, kong)	11m 11s
integration-test (1.27.16, gateway-operator)	1m 38s
lint-test (1.31.4, ingress)	3m 40s
integration-test (1.28.15, kong)	1m 54s
lint-test (1.31.4, gateway-operator)	4m 31s
integration-test (1.28.15, ingress)	1m 47s
integration-test (1.28.15, gateway-operator)	1m 47s
oldversion-integration-test (2.10, 3.3, kong)	1m 45s
integration-test (1.29.12, kong)	1m 58s
oldversion-integration-test (2.10, 3.3, ingress)	1m 42s
integration-test (1.29.12, ingress)	1m 46s
oldversion-integration-test (2.10, 3.2, kong)	1m 37s
integration-test (1.29.12, gateway-operator)	1m 38s
oldversion-integration-test (2.10, 3.2, ingress)	1m 38s
integration-test (1.30.8, kong)	1m 55s
oldversion-integration-test (2.11, 3.3, kong)	1m 57s
oldversion-integration-test (2.11, 3.3, ingress)	1m 50s
integration-test (1.30.8, ingress)	1m 52s
oldversion-integration-test (2.11, 3.2, kong)	1m 39s
integration-test (1.30.8, gateway-operator)	1m 44s
oldversion-integration-test (2.11, 3.2, ingress)	1m 43s
integration-test (1.31.4, kong)	1m 41s
integration-test (1.31.4, ingress)	1m 38s
integration-test (1.31.4, gateway-operator)	1m 34s
integration-test (1.32.0, kong)	1m 40s
integration-test (1.32.0, ingress)	1m 45s
integration-test (1.32.0, gateway-operator)	1m 22s
passed	1s
	1h 5m 25s

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