Add dummy profile to manage Disruptor 4 upgrades

Author: ppkarwasz

.github/dependabot.yaml

@@ -81,9 +81,10 @@ updates:
     # Json Unit 3.x requires Java 17
     - dependency-name: "net.javacrumbs.json-unit:*"
       versions: ["[3.0.0,)"]
-    # LMAX Disruptor requires Java 11
+    # Update both `disruptor.version` to latest 3.x version
+    # and `disruptor4.version` to latest 4.x version
     - dependency-name: "com.lmax:disruptor"
-      versions: ["[4.0.0,)"]
+      update-types: ["version-update:semver-major"]
     # WebCompere System Stubs requires Java 11
     - dependency-name: "uk.org.webcompere:*"
       versions: ["2.1.0,)"]

log4j-core-test/pom.xml

@@ -452,6 +452,20 @@
 
     </profile>
 
+    <!--
+      ~ Dummy profile to force Dependabot to upgrade `disruptor4.version`.
+      ~ Using this profile causes a compilation error.
+      -->
+    <profile>
+      <id>disruptor-4</id>
+      <dependencies>
+        <dependency>
+          <groupId>com.lmax</groupId>
+          <artifactId>disruptor</artifactId>
+          <version>${disruptor4.version}</version>
+        </dependency>
+      </dependencies>
+    </profile>
   </profiles>
 
 </project>