Alerting: Update alerting module to b7821017d69f2e31500fc0e49cd0ba3b85372a1b (#115767)

* [create-pull-request] automated change

* Fix tests

---------

Co-authored-by: alexander-akhmetov <1875873+alexander-akhmetov@users.noreply.github.com>
Co-authored-by: Alexander Akhmetov <me@alx.cx>

pkg/tests/api/alerting/test-data/alert-notifiers-v1-snapshot.json

@@ -2699,6 +2699,24 @@
         "secure": false,
         "dependsOn": "",
         "subformOptions": null
+      },
+      {
+        "element": "input",
+        "inputType": "text",
+        "label": "Footer",
+        "description": "Templated footer of the slack message",
+        "placeholder": "{{ template \"slack.default.footer\" . }}",
+        "propertyName": "footer",
+        "selectOptions": null,
+        "showWhen": {
+          "field": "",
+          "is": ""
+        },
+        "required": false,
+        "validationRule": "",
+        "secure": false,
+        "dependsOn": "",
+        "subformOptions": null
       }
     ]
   },

pkg/tests/api/alerting/test-data/alert-notifiers-v2-snapshot.json

@@ -7017,6 +7017,24 @@
             "secure": false,
             "dependsOn": "",
             "subformOptions": null
+          },
+          {
+            "element": "input",
+            "inputType": "text",
+            "label": "Footer",
+            "description": "Templated footer of the slack message",
+            "placeholder": "{{ template \"slack.default.footer\" . }}",
+            "propertyName": "footer",
+            "selectOptions": null,
+            "showWhen": {
+              "field": "",
+              "is": ""
+            },
+            "required": false,
+            "validationRule": "",
+            "secure": false,
+            "dependsOn": "",
+            "subformOptions": null
           }
         ]
       },