Pin version of golang BOM to 1.4.0 (#4462) #517

Job	Run time
Start	12s
Build Piper	2m 43s
Build integration tests	1m 5s
Run integration tests ("(TestCNBIntegrationBindings\|TestCNBIntegrationWrongBuilderProject\|TestCNB...	2m 43s
Run integration tests ("TestCNBIntegrationPreserveFiles\b")	3m 15s
Run integration tests ("TestCNBIntegrationNPMProject")	4m 59s
Run integration tests ("TestCNBIntegrationMultiImage")	6m 29s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksBuildpacklessProject")	2m 55s
Run integration tests ("TestCNBIntegrationNPMCustomBuildpacksFullProject")	2m 8s
Run integration tests ("TestCNBIntegrationProjectDescriptor")	2m 51s
Run integration tests ("TestCNBIntegrationPrePostBuildpacks")	2m 18s
Run integration tests ("TestGolangIntegration")	2m 46s
Run integration tests ("TestGradleIntegration")	2m 26s
Run integration tests ("TestMavenIntegration")	2m 59s
Run integration tests ("TestMTAIntegration")	2m 37s
Run integration tests ("TestTmsUploadIntegration")	1m 10s
Run integration tests ("TestTmsExportIntegration")	1m 10s
Run integration tests ("Test(Gauge\|GCS\|GitHub\|GitOps\|Influx\|NPM\|Piper\|Python\|Sonar\|Vault\|Karma)In...	3m 36s
Finish	1s
	48m 23s

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