Updating github actions to run on .NET 7

Author: lord-executor

.github/workflows/ci.yml

@@ -1,19 +1,19 @@
-name: .NET 6 CI
-on: [push]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    name: Build and Test
-    steps:
-      - uses: actions/checkout@v2
-
-      - uses: actions/setup-dotnet@v1
-        name: Setup .NET SDK
-        with:
-          dotnet-version: '6.0.x'
-
-      - name: Build
-        run: dotnet build src/Ninject.Web.AspNetCore.sln -c Release
-      - name: Test
-        run: dotnet test src/Ninject.Web.AspNetCore.sln -c Release
+name: .NET 7 CI
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Build and Test
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-dotnet@v1
+        name: Setup .NET SDK
+        with:
+          dotnet-version: '7.0.x'
+
+      - name: Build
+        run: dotnet build src/Ninject.Web.AspNetCore.sln -c Release
+      - name: Test
+        run: dotnet test src/Ninject.Web.AspNetCore.sln -c Release