chore(deps): Add dotnet 8 to ci (#257)

## This PR
Adds dotnet 8 to ci automation to fix renovate dotnet update
Should fix this PR: #218

Signed-off-by: Jens Henneberg <[email protected]>

Author: jenshenneberg

.github/workflows/ci.yml

@@ -33,6 +33,7 @@ jobs:
         dotnet-version: |
           6.0.x
           7.0.x
+          8.0.x
         source-url: https://nuget.pkg.github.com/open-feature/index.json
 
     - name: Restore
@@ -68,6 +69,7 @@ jobs:
         dotnet-version: |
           6.0.x
           7.0.x
+          8.0.x
         source-url: https://nuget.pkg.github.com/open-feature/index.json
 
     - name: Restore

.github/workflows/code-coverage.yml

@@ -31,6 +31,7 @@ jobs:
         dotnet-version: |
           6.0.x
           7.0.x
+          8.0.x
         source-url: https://nuget.pkg.github.com/open-feature/index.json
 
     - name: Run Test

.github/workflows/e2e.yml

@@ -26,6 +26,7 @@ jobs:
         dotnet-version: |
           6.0.x
           7.0.x
+          8.0.x
         source-url: https://nuget.pkg.github.com/open-feature/index.json
 
     - name: Initialize Tests

.github/workflows/release.yml

@@ -38,6 +38,7 @@ jobs:
           dotnet-version: |
             6.0.x
             7.0.x
+            8.0.x
           source-url: https://nuget.pkg.github.com/open-feature/index.json
 
       - name: Install dependencies