Update coursier jvm-index to 0.0.4-111-eb6e08 (#5122)

Seems Scala Steward hasn't opened PRs in the Mill repo for a while, so
let's manually bump this

Author: alexarchambault

integration/bootstrap/no-java-bootstrap/src/NoJavaBootstrapTests.scala

@@ -1,5 +1,8 @@
 package mill.integration
 
+import coursier.Resolve
+import coursier.cache.FileCache
+import coursier.jvm.{JvmCache, JvmChannel, JvmIndex}
 import mill.testkit.UtestIntegrationTestSuite
 
 import utest._
@@ -8,6 +11,30 @@ object NoJavaBootstrapTests extends UtestIntegrationTestSuite {
   // Don't propagate `JAVA_HOME` to this test suite, because we want to exercise
   // the code path where `JAVA_HOME` is not present during bootstrapping
   override def propagateJavaHome = false
+
+  // Compute the expected JVM version from the coursier index
+  // In PRs bumping the index version, the JVM version might differ from the
+  // one of the Mill process running the tests
+  private lazy val expectedJavaVersion = {
+    val cache = FileCache()
+    val index = JvmIndex.load(
+      cache = cache,
+      repositories = Resolve().repositories,
+      indexChannel = JvmChannel.module(
+        JvmChannel.centralModule(),
+        version = mill.api.BuildInfo.coursierJvmIndexVersion
+      )
+    )
+    val jvmCache = JvmCache().withIndex(index)
+
+    val entry = jvmCache.entries(mill.client.BuildInfo.defaultJvmId).unsafeRun()(using cache.ec)
+      .left.map(err => sys.error(err))
+      .merge
+      .last
+
+    entry.version
+  }
+
   val tests: Tests = Tests {
     test - integrationTest { tester =>
       import tester._
@@ -23,7 +50,7 @@ object NoJavaBootstrapTests extends UtestIntegrationTestSuite {
         stderr = os.Inherit
       )
 
-      assert(res1.out == System.getProperty("java.version"))
+      assert(res1.out == expectedJavaVersion)
 
       // Any `JavaModule`s run from the Mill server should also inherit
       // the default Mill Java version from it
@@ -33,7 +60,7 @@ object NoJavaBootstrapTests extends UtestIntegrationTestSuite {
         stderr = os.Inherit
       )
 
-      assert(res2.out == s"Hello World! ${System.getProperty("java.version")}")
+      assert(res2.out == s"Hello World! $expectedJavaVersion")
     }
   }
 }

mill-build/src/millbuild/Deps.scala

@@ -179,7 +179,7 @@ object Deps {
     mvn"org.apache.maven.resolver:maven-resolver-transport-http:$mavenResolverVersion"
   val mavenResolverTransportWagon =
     mvn"org.apache.maven.resolver:maven-resolver-transport-wagon:$mavenResolverVersion"
-  val coursierJvmIndexVersion = "0.0.4-84-f852c6"
+  val coursierJvmIndexVersion = "0.0.4-111-eb6e08"
   val gradleApi = mvn"dev.gradleplugins:gradle-api:8.11.1"
 
   val androidTools = mvn"com.android.tools.build:gradle:8.9.1"