Add patch to linkchecker

patches/d10.json

@@ -162,6 +162,9 @@
     "drupal/link_attributes": {
       "#3050455 Array ri string conversion": "https://www.drupal.org/files/issues/2019-04-24/3050455-2.link_attributes.Array-to-string-conversion-in-DrupalCoreTemplateAttributeArraytoString.patch"
     },
+    "drupal/linkchecker": {
+      "#3375253 Alter request header": "https://git.drupalcode.org/project/linkchecker/-/merge_requests/47.diff"
+    },
     "drupal/linkit": {
       "#3022261 Support anchors": "https://www.drupal.org/files/issues/2021-10-15/3022261_linkit_add-better-support-for-linking-to-anchors_22.patch"
     },

patches/d9.json

@@ -166,6 +166,9 @@
     "drupal/link_attributes": {
       "#3050455 Array ri string conversion": "https://www.drupal.org/files/issues/2019-04-24/3050455-2.link_attributes.Array-to-string-conversion-in-DrupalCoreTemplateAttributeArraytoString.patch"
     },
+    "drupal/linkchecker": {
+      "#3375253 Alter request header": "https://git.drupalcode.org/project/linkchecker/-/merge_requests/47.diff"
+    },
     "drupal/linkit": {
       "#3022261 Support anchors": "https://www.drupal.org/files/issues/2021-10-15/3022261_linkit_add-better-support-for-linking-to-anchors_22.patch"
     },