Minor cleanup: Use `findComponent` within specs

Changes from `find` to `findComponent` where applicable.

ee/spec/frontend/vulnerabilities/vulnerability_spec.js

@@ -89,10 +89,10 @@ describe('Vulnerability', () => {
     wrapper.destroy();
   });
 
-  const findHeader = () => wrapper.find(VulnerabilityHeader);
-  const findDetails = () => wrapper.find(Details);
-  const findFooter = () => wrapper.find(VulnerabilityFooter);
-  const findAlert = () => wrapper.find(FalsePositiveAlert);
+  const findHeader = () => wrapper.findComponent(VulnerabilityHeader);
+  const findDetails = () => wrapper.findComponent(Details);
+  const findFooter = () => wrapper.findComponent(VulnerabilityFooter);
+  const findAlert = () => wrapper.findComponent(FalsePositiveAlert);
 
   describe('default behavior', () => {
     beforeEach(() => {