fix: catch lookup errors gracefully (#12369)

lib/types/skip-reason.ts

@@ -8,6 +8,7 @@ export enum SkipReason {
   GitDependency = 'git-dependency',
   GitPlugin = 'git-plugin',
   Ignored = 'ignored',
+  InternalError = 'internal-error',
   InternalPackage = 'internal-package',
   InvalidConfig = 'invalid-config',
   InvalidDependencySpecification = 'invalid-dependency-specification',

lib/workers/repository/process/lookup/types.ts

@@ -57,6 +57,5 @@ export interface UpdateResult {
   fixedVersion?: string;
   updates: LookupUpdate[];
   warnings: ValidationMessage[];
-
-  versioning: string;
+  versioning?: string;
 }