Update Jetty 12 version to 12.0.26.

PiperOrigin-RevId: 805347180
Change-Id: I6891e9991e4813fa2170d3dca6348ec765c83d95

Author: ludoch

appengine_setup/testapps/jetty12_testapp/pom.xml

@@ -26,7 +26,7 @@
   <groupId>com.google.appengine.setup.testapps</groupId>
   <artifactId>jetty12_testapp</artifactId>
   <properties>
-    <jetty.version>12.0.25</jetty.version>
+    <jetty.version>12.0.26</jetty.version>
     <aspectj.version>1.9.24</aspectj.version>
   </properties>
   <dependencies>

pom.xml

@@ -68,7 +68,7 @@
     <maven.compiler.target>1.8</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <jetty.version>9.4.58.v20250814</jetty.version>
-    <jetty12.version>12.0.25</jetty12.version>
+    <jetty12.version>12.0.26</jetty12.version>
     <slf4j.version>2.0.17</slf4j.version>
     <distributionManagement.snapshot.url>https://oss.sonatype.org/content/repositories/google-snapshots/</distributionManagement.snapshot.url>
     <distributionManagement.snapshot.id>sonatype-nexus-snapshots</distributionManagement.snapshot.id>