chore(deps): update dependency eslint to v9.26.0

src/backend/server/Dockerfile

@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
 COPY *.sln .

src/backend/server/global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.101",
+    "version": "9.0.200",
     "rollForward": "latestMajor",
     "allowPrerelease": true
   }

src/client/package.json

@@ -8,7 +8,7 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@microsoft/signalr": "10.0.0",
+    "@microsoft/signalr": "8.0.7",
     "@reduxjs/toolkit": "2.6.0",
     "@tippyjs/react": "4.2.6",
     "axios": "1.8.1",
@@ -25,7 +25,7 @@
     "@types/react-redux": "7.1.34",
     "autoprefixer": "10.4.20",
     "cssnano": "7.0.6",
-    "eslint": "9.21.0",
+    "eslint": "9.26.0",
     "eslint-config-next": "15.2.1",
     "postcss": "8.5.3",
     "postcss-import": "16.1.0",