Bump multer from 2.0.2 to 2.1.1 in /src/server

Bumps [multer](https://github.com/expressjs/multer) from 2.0.2 to 2.1.1.
- [Release notes](https://github.com/expressjs/multer/releases)
- [Changelog](https://github.com/expressjs/multer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/expressjs/multer/compare/v2.0.2...v2.1.1)

---
updated-dependencies:
- dependency-name: multer
  dependency-version: 2.1.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

src/server/package-lock.json

@@ -2069,18 +2069,6 @@
                 "url": "https://github.com/sponsors/ljharb"
             }
         },
-        "node_modules/mkdirp": {
-            "version": "0.5.6",
-            "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.6.tgz",
-            "integrity": "sha512-FP+p8RB8OWpF3YZBCrP5gtADmtXApB5AMLn+vdyA+PyxCjrCs00mjyUozssO33cwDeT3wNGdLxJ5M//YqtHAJw==",
-            "license": "MIT",
-            "dependencies": {
-                "minimist": "^1.2.6"
-            },
-            "bin": {
-                "mkdirp": "bin/cmd.js"
-            }
-        },
         "node_modules/ms": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -2088,21 +2076,22 @@
             "license": "MIT"
         },
         "node_modules/multer": {
-            "version": "2.0.2",
-            "resolved": "https://registry.npmjs.org/multer/-/multer-2.0.2.tgz",
-            "integrity": "sha512-u7f2xaZ/UG8oLXHvtF/oWTRvT44p9ecwBBqTwgJVq0+4BW1g8OW01TyMEGWBHbyMOYVHXslaut7qEQ1meATXgw==",
+            "version": "2.1.1",
+            "resolved": "https://registry.npmjs.org/multer/-/multer-2.1.1.tgz",
+            "integrity": "sha512-mo+QTzKlx8R7E5ylSXxWzGoXoZbOsRMpyitcht8By2KHvMbf3tjwosZ/Mu/XYU6UuJ3VZnODIrak5ZrPiPyB6A==",
             "license": "MIT",
             "dependencies": {
                 "append-field": "^1.0.0",
                 "busboy": "^1.6.0",
                 "concat-stream": "^2.0.0",
-                "mkdirp": "^0.5.6",
-                "object-assign": "^4.1.1",
-                "type-is": "^1.6.18",
-                "xtend": "^4.0.2"
+                "type-is": "^1.6.18"
             },
             "engines": {
                 "node": ">= 10.16.0"
+            },
+            "funding": {
+                "type": "opencollective",
+                "url": "https://opencollective.com/express"
             }
         },
         "node_modules/mysql": {
@@ -2211,6 +2200,7 @@
             "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
             "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg==",
             "license": "MIT",
+            "peer": true,
             "engines": {
                 "node": ">=0.10.0"
             }
@@ -3819,15 +3809,6 @@
                 }
             }
         },
-        "node_modules/xtend": {
-            "version": "4.0.2",
-            "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
-            "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
-            "license": "MIT",
-            "engines": {
-                "node": ">=0.4"
-            }
-        },
         "node_modules/zod": {
             "version": "3.25.76",
             "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",