enable differentiated error messages for DR eligibility when API returns 403

src/main.ts

@@ -53,6 +53,10 @@ async function run(): Promise<void> {
     }
   } catch (error) {
     if (error instanceof RequestError && error.status === 404) {
+      core.setFailed(
+        `Dependency review could not obtain dependency data for the specified owner, repository, or revision range.`
+      )
+    } else if (error instanceof RequestError && error.status === 403) {
       core.setFailed(
         `Dependency review is not supported on this repository. Please ensure that Dependency graph is enabled, see https://github.com/${github.context.repo.owner}/${github.context.repo.repo}/settings/security_analysis`
       )