Update frcYear to 2026beta (#800)

In past betas we used just the year which let beta vendordeps be
use with releases. This will make beta vendordeps only loadable with on
beta projects

Author: sciencewhiz

src/main/java/edu/wpi/first/gradlerio/wpi/WPIExtension.java

@@ -63,7 +63,7 @@ public WPIExtension(Project project) {
         platforms = new NativePlatforms();
 
         frcYear = factory.property(String.class);
-        frcYear.convention("2025");
+        frcYear.convention("2026beta");
 
         frcHome = factory.directoryProperty().fileProvider(project.provider(WPIExtension::computeHomeRoot))
                 .dir(frcYear);

testing/asm/settings.gradle

@@ -4,7 +4,7 @@ pluginManagement {
     repositories {
         mavenLocal()
         gradlePluginPortal()
-        String frcYear = '2025'
+        String frcYear = '2026beta'
         File frcHome
         if (OperatingSystem.current().isWindows()) {
             String publicFolder = System.getenv('PUBLIC')

testing/java/settings.gradle

@@ -4,7 +4,7 @@ pluginManagement {
     repositories {
         mavenLocal()
         gradlePluginPortal()
-        String frcYear = '2025'
+        String frcYear = '2026beta'
         File frcHome
         if (OperatingSystem.current().isWindows()) {
             String publicFolder = System.getenv('PUBLIC')

testing/jni/settings.gradle

@@ -4,7 +4,7 @@ pluginManagement {
     repositories {
         mavenLocal()
         gradlePluginPortal()
-        String frcYear = '2025'
+        String frcYear = '2026beta'
         File frcHome
         if (OperatingSystem.current().isWindows()) {
             String publicFolder = System.getenv('PUBLIC')