Don't throw on fail to resolve DNS

Author: tom-sherman

packages/core/deno.jsonc

@@ -1,6 +1,6 @@
 {
   "name": "@lpm/core",
-  "version": "0.2.5",
+  "version": "0.2.6",
   "license": "MIT",
   "exports": "./mod.ts",
 

packages/core/src/nsid-authority.ts

@@ -29,9 +29,14 @@ export class NSIDAuthorityService {
       )
       : nsidOrPattern;
 
-    const record = await this.dnsServicer.resolveTxt(
-      `_lexicon.${nsid.authority}`,
-    );
+    let record;
+    try {
+      record = await this.dnsServicer.resolveTxt(
+        `_lexicon.${nsid.authority}`,
+      );
+    } catch (_) {
+      return null;
+    }
 
     const authorityDid = record.join("").replace(/^did=/, "");