add .net 8.0 to GitHub Actions

.github/workflows/build.yml

@@ -50,11 +50,12 @@ jobs:
       - uses: actions/setup-dotnet@v3.2.0
         with:
           dotnet-version: |
-            2.1.818
-            3.1.x
-            5.0.x
-            6.0.x
-            7.0.x
+            2.1
+            3.1
+            5.0
+            6.0
+            7.0
+            8.0
       - name: Cache Tools
         uses: actions/cache@v3
         with:

.github/workflows/codeql-analysis.yml

@@ -41,9 +41,8 @@ jobs:
     - uses: actions/setup-dotnet@v3.2.0
       with:
         dotnet-version: |
-            5.0.x
-            6.0.x
-            7.0.x
+            5.0
+            8.0
 
     - name: Cache Tools
       uses: actions/cache@v3

.github/workflows/publishDocs.yml

@@ -19,7 +19,7 @@ jobs:
 
     - name: Fetch all tags and branches
       run: git fetch --prune --unshallow
-    
+
     - name: Cache Tools
       uses: actions/cache@v3
       with: