fix: resolve npm security vulnerabilities via audit fix and overrides

Agent-Logs-Url: https://github.com/microsoft/vscode-azurefunctions/sessions/63bcc899-25ba-4614-b29e-831f8ae52aa7

Co-authored-by: bwateratmsft <36966225+bwateratmsft@users.noreply.github.com>

Author: Copilot

package-lock.json

@@ -1622,5 +1622,9 @@
         "runWizardCommandWithoutExecutionCommandId": "azureFunctions.agent.runWizardCommandWithoutExecution",
         "runWizardCommandWithInputsCommandId": "azureFunctions.agent.runWizardCommandWithInputs",
         "getAgentBenchmarkConfigsCommandId": "azureFunctions.agent.getAgentBenchmarkConfigs"
+    },
+    "overrides": {
+        "serialize-javascript": ">=7.0.5",
+        "diff": ">=8.0.3"
     }
 }