Make Micrometer context-propagation available to test compilation

See gh-34201

spring-boot-project/spring-boot-autoconfigure/build.gradle

@@ -221,6 +221,7 @@ dependencies {
 	testImplementation("com.querydsl:querydsl-core")
 	testImplementation("com.squareup.okhttp3:mockwebserver")
 	testImplementation("com.sun.xml.messaging.saaj:saaj-impl")
+	testImplementation("io.micrometer:context-propagation")
 	testImplementation("io.projectreactor:reactor-test")
 	testImplementation("io.r2dbc:r2dbc-h2")
 	testImplementation("jakarta.json:jakarta.json-api")

spring-boot-project/spring-boot-parent/build.gradle

@@ -137,6 +137,13 @@ bom {
 			]
 		}
 	}
+	library("Micrometer Context Propagation", "1.0.2") {
+		group("io.micrometer") {
+			modules = [
+				"context-propagation"
+			]
+		}
+	}
 	library("MockK", "1.10.6") {
 		group("io.mockk") {
 			modules = [