update workflow using speakeasy configure publish

Author: 2ynn

.github/workflows/sdk_generation.yaml

@@ -1,5 +1,5 @@
 name: Generate
-on:
+"on":
   workflow_dispatch:
     inputs:
       force:

.github/workflows/sdk_publish.yaml

@@ -1,11 +1,5 @@
 name: Publish
-permissions:
-  checks: write
-  contents: write
-  pull-requests: write
-  statuses: write
-on:
-  workflow_dispatch:
+"on":
   push:
     branches:
       - main

.speakeasy/workflow.yaml

@@ -1,12 +1,12 @@
 workflowVersion: 1.0.0
-speakeasyVersion: latest
 sources:
     speakeasy:
         inputs:
             - location: https://docs.speakeasyapi.dev/openapi.yaml
-        registry:
-            location: registry.speakeasyapi.dev/speakeasy-self/speakeasy-self/speakeasy
 targets:
     speakeasy-client-sdk-csharp:
         target: csharp
         source: speakeasy
+        publish:
+            nuget:
+                apiKey: $nuget_api_key