Simplify Summary summary based on license-check and vulnerability-check

Omit details related to the license check of vulnerability check from
the GitHub Actions Summary's summary if the respective check is disabled
from the configuration.

src/main.ts

@@ -53,7 +53,11 @@ async function run(): Promise<void> {
       }
     )
 
-    summary.addSummaryToSummary(addedChanges, invalidLicenseChanges)
+    summary.addSummaryToSummary(
+      config.vulnerability_check ? addedChanges : null,
+      config.license_check ? invalidLicenseChanges : null
+    )
+
     if (config.vulnerability_check) {
       summary.addChangeVulnerabilitiesToSummary(addedChanges, minSeverity)
       printVulnerabilitiesBlock(addedChanges, minSeverity)

src/summary.ts

@@ -4,17 +4,23 @@ import {SummaryTableRow} from '@actions/core/lib/summary'
 import {groupDependenciesByManifest, getManifestsSet, renderUrl} from './utils'
 
 export function addSummaryToSummary(
-  addedPackages: Changes,
-  invalidLicenseChanges: Record<string, Changes>
+  addedPackages: Changes | null,
+  invalidLicenseChanges: Record<string, Changes> | null
 ): void {
   core.summary
     .addHeading('Dependency Review')
     .addRaw('We found:')
     .addList([
-      `${addedPackages.length} vulnerable package(s)`,
-      `${invalidLicenseChanges.unresolved.length} package(s) with invalid SPDX license definitions`,
-      `${invalidLicenseChanges.forbidden.length} package(s) with incompatible licenses`,
-      `${invalidLicenseChanges.unlicensed.length} package(s) with unknown licenses.`
+      ...(addedPackages
+        ? [`${addedPackages.length} vulnerable package(s)`]
+        : []),
+      ...(invalidLicenseChanges
+        ? [
+            `${invalidLicenseChanges.unresolved.length} package(s) with invalid SPDX license definitions`,
+            `${invalidLicenseChanges.forbidden.length} package(s) with incompatible licenses`,
+            `${invalidLicenseChanges.unlicensed.length} package(s) with unknown licenses.`
+          ]
+        : [])
     ])
 }