webflux6-micrometer: uses milestone release (#121)

Signed-off-by: Adrian Cole <adrian@tetrate.io>

webflux6-micrometer/pom.xml

@@ -19,14 +19,34 @@
     <jre.version>21</jre.version>
     <maven.compiler.release>17</maven.compiler.release>
 
-    <spring-boot.version>3.2.3</spring-boot.version>
-    <micrometer.version>1.2.3</micrometer.version>
-
-    <!-- pinned to old brave until micrometer 1.3.0 -->
-    <brave.version>5.17.1</brave.version>
-    <zipkin-reporter.version>2.17.2</zipkin-reporter.version>
+    <spring-boot.version>3.3.0-M2</spring-boot.version>
+    <micrometer.version>1.3.0-M1</micrometer.version>
   </properties>
 
+  <!-- Temporary until Spring boot 3.3.0 -->
+  <pluginRepositories>
+    <pluginRepository>
+      <id>repository.spring.milestone</id>
+      <name>Spring Milestone Repository</name>
+      <url>https://repo.spring.io/milestone</url>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+    </pluginRepository>
+  </pluginRepositories>
+
+  <!-- Temporary until Spring boot 3.3.0 -->
+  <repositories>
+    <repository>
+      <id>repository.spring.milestone</id>
+      <name>Spring Milestone Repository</name>
+      <url>https://repo.spring.io/milestone</url>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+    </repository>
+  </repositories>
+
   <dependencyManagement>
     <dependencies>
       <dependency>