update monolog/monolog to 2.9.1, fixes #2460

Closes #2460

Merge request studip/studip!1657

composer.lock

@@ -1226,16 +1226,16 @@
         },
         {
             "name": "monolog/monolog",
-            "version": "2.8.0",
+            "version": "2.9.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "720488632c590286b88b80e62aa3d3d551ad4a50"
+                "reference": "f259e2b15fb95494c83f52d3caad003bbf5ffaa1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/720488632c590286b88b80e62aa3d3d551ad4a50",
-                "reference": "720488632c590286b88b80e62aa3d3d551ad4a50",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/f259e2b15fb95494c83f52d3caad003bbf5ffaa1",
+                "reference": "f259e2b15fb95494c83f52d3caad003bbf5ffaa1",
                 "shasum": ""
             },
             "require": {
@@ -1250,7 +1250,7 @@
                 "doctrine/couchdb": "~1.0@dev",
                 "elasticsearch/elasticsearch": "^7 || ^8",
                 "ext-json": "*",
-                "graylog2/gelf-php": "^1.4.2",
+                "graylog2/gelf-php": "^1.4.2 || ^2@dev",
                 "guzzlehttp/guzzle": "^7.4",
                 "guzzlehttp/psr7": "^2.2",
                 "mongodb/mongodb": "^1.8",
@@ -1312,7 +1312,7 @@
             ],
             "support": {
                 "issues": "https://github.com/Seldaek/monolog/issues",
-                "source": "https://github.com/Seldaek/monolog/tree/2.8.0"
+                "source": "https://github.com/Seldaek/monolog/tree/2.9.1"
             },
             "funding": [
                 {
@@ -1324,7 +1324,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-07-24T11:55:47+00:00"
+            "time": "2023-02-06T13:44:46+00:00"
         },
         {
             "name": "neomerx/cors-psr7",