Update GitHub Actions to test with Java 27-ea instead of 26-ea.

PiperOrigin-RevId: 871913448
Change-Id: I5af8ed3d63f42644a80725a708e7e572b58b0af1

Author: ludoch

.github/workflows/maven.yml

@@ -31,7 +31,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [17, 21, 25, 26-ea]
+        java: [17, 21, 25, 27-ea]
         jdk: [temurin]
         include:
           - java: 17
@@ -40,7 +40,7 @@ jobs:
             maven_profile: "-Pjdk21"
           - java: 25
             maven_profile: "-Pjdk25"
-          - java: 26-ea
+          - java: 27-ea
             maven_profile: "-Pjdk25"
       fail-fast: false
 
@@ -63,8 +63,8 @@ jobs:
             echo "JAVA_HOME_21=$JAVA_HOME" >> $GITHUB_ENV
           elif [[ "${{ matrix.java }}" == "25" ]]; then
             echo "JAVA_HOME_25=$JAVA_HOME" >> $GITHUB_ENV
-          elif [[ "${{ matrix.java }}" == "26-ea" ]]; then
-            echo "JAVA_HOME_26=$JAVA_HOME" >> $GITHUB_ENV
+          elif [[ "${{ matrix.java }}" == "27-ea" ]]; then
+            echo "JAVA_HOME_27=$JAVA_HOME" >> $GITHUB_ENV
           fi
 
       - name: Build with Maven