Updated debian changelog for version 1.3.0

debian/changelog

+swh-loader-metadata (1.3.0-1~swh1) unstable-swh; urgency=medium
+
+  * New upstream release 1.3.0     - (tagged by Valentin Lorentz
+    <vlorentz@softwareheritage.org> on 2023-05-17 15:24:09 +0200)
+  * Upstream changes:     - v1.3.0     - * journal_client: Tag
+    'get_origin_metadata' and 'metadata_fetchers' with forge type + Add
+    metrics for the number of metadata items     - * Actually skip
+    duplicate calls to metadata_fetcher_add/metadata_authority_add
+
+ -- Software Heritage autobuilder (on jenkins-debian1) <jenkins@jenkins-debian1.internal.softwareheritage.org>  Wed, 17 May 2023 13:27:26 +0000
+
 swh-loader-metadata (1.2.0-1~swh1) unstable-swh; urgency=medium
 
   * New upstream release 1.2.0     - (tagged by Valentin Lorentz