fix[dtl]: log server errors as ERROR instead of INFO (#1133)

* fix[dtl]: log server errors as ERROR instead of INFO

* chore: add changeset

.changeset/lazy-foxes-jump.md

+---
+'@eth-optimism/data-transport-layer': patch
+---
+
+Have DTL log failed HTTP requests as ERROR instead of INFO

packages/data-transport-layer/src/services/server/service.ts

@@ -201,7 +201,7 @@ export class L1TransportServer extends BaseService<L1TransportServerOptions> {
         return res.json(json)
       } catch (e) {
         const elapsed = Date.now() - start
-        this.logger.info('Failed HTTP Request', {
+        this.logger.error('Failed HTTP Request', {
           method: req.method,
           url: req.url,
           elapsed,