chore: improve test fragile root dep lookup

Signed-off-by: Ruben Romero Montes <rromerom@redhat.com>

Author: ruromero

test/providers/golang_gomodules.test.js

@@ -61,7 +61,8 @@ suite('testing the golang-go-modules data provider', () => {
 	test('verify go_mod_no_ignore component analysis includes all root-level deps from go mod graph', async () => {
 		let providedData = await golangGoModules.provideComponent('test/providers/tst_manifests/golang/go_mod_no_ignore/go.mod')
 		let sbom = JSON.parse(providedData.content)
-		let rootDeps = sbom.dependencies.find(d => d.dependsOn && d.dependsOn.length > 0)
+		let rootRef = sbom.metadata.component.purl
+		let rootDeps = sbom.dependencies.find(d => d.ref === rootRef)
 		expect(rootDeps.dependsOn).to.have.lengthOf(45,
 			'Component analysis should include all root-level edges from go mod graph as direct deps. ' +
 			'A lower count indicates the directDepPaths filtering is incorrectly excluding indirect require entries.')