chore: Release library Google.Cloud.NetworkManagement.V1 version 2.18.0

### New features

- Add fields and messages for GKE Pods and IP masquerading

### Documentation improvements

- Update comments

Librarian-Release-Library: Google.Cloud.NetworkManagement.V1
Librarian-Release-Version: 2.18.0
Librarian-Release-ID: release-20260126T140114Z

Author: google-cloud-sdk-librarian-dotnet-robot

apis/Google.Cloud.NetworkManagement.V1/Google.Cloud.NetworkManagement.V1/Google.Cloud.NetworkManagement.V1.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>2.17.0</Version>
+    <Version>2.18.0</Version>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Description>Recommended Google client library to access the Google Cloud Network Management API, which provides a collection of network performance monitoring and diagnostic capabilities.</Description>

apis/Google.Cloud.NetworkManagement.V1/docs/history.md

@@ -1,5 +1,15 @@
 # Version history
 
+## Version 2.18.0, released 2026-01-26
+
+### New features
+
+- Add fields and messages for GKE Pods and IP masquerading
+
+### Documentation improvements
+
+- Update comments
+
 ## Version 2.17.0, released 2025-11-05
 
 ### New features

generator-input/apis.json

@@ -4099,7 +4099,7 @@
     },
     {
       "id": "Google.Cloud.NetworkManagement.V1",
-      "version": "2.17.0",
+      "version": "2.18.0",
       "type": "grpc",
       "productName": "Network Management",
       "productUrl": "https://cloud.google.com/network-intelligence-center/docs/",

generator-input/pipeline-state.json

@@ -2268,12 +2268,12 @@
         },
         {
             "id": "Google.Cloud.NetworkManagement.V1",
-            "currentVersion": "2.17.0",
+            "currentVersion": "2.18.0",
             "generationAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
             "releaseAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
-            "releaseTimestamp": "2025-11-05T22:05:19.440999231Z",
+            "releaseTimestamp": "2026-01-26T14:11:37.226820256Z",
             "lastGeneratedCommit": "3343c4ed68f17a8910a04ef54647e337818e7ec2",
-            "lastReleasedCommit": "4d45a59e3edfa9607e43502515ae16b745890f3b",
+            "lastReleasedCommit": "3343c4ed68f17a8910a04ef54647e337818e7ec2",
             "apiPaths": [
                 "google/cloud/networkmanagement/v1"
             ],