Revise the wrong pricing of certain LLM models. (#6967)

api/core/model_runtime/model_providers/groq/llm/llama3-70b-8192.yaml

     min: 1
     max: 8192
 pricing:
-  input: '0.05'
-  output: '0.1'
+  input: '0.59'
+  output: '0.79'
   unit: '0.000001'
   currency: USD

api/core/model_runtime/model_providers/groq/llm/llama3-8b-8192.yaml

     min: 1
     max: 8192
 pricing:
-  input: '0.59'
-  output: '0.79'
+  input: '0.05'
+  output: '0.08'
   unit: '0.000001'
   currency: USD

api/core/model_runtime/model_providers/openai/llm/gpt-3.5-turbo.yaml

       - text
       - json_object
 pricing:
-  input: '0.001'
-  output: '0.002'
+  input: '0.0005'
+  output: '0.0015'
   unit: '0.001'
   currency: USD