Include optional dependencies in dogfood

Signed-off-by: ascopes <73482956+ascopes@users.noreply.github.com>

Author: ascopes

acceptance-tests/acceptance-tests-dogfood/pom.xml

@@ -72,6 +72,16 @@
       <artifactId>slf4j-simple</artifactId>
       <scope>test</scope>
     </dependency>
+    
+    <dependency>
+      <groupId>org.apiguardian</groupId>
+      <artifactId>apiguardian-api</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
+    </dependency>
 
     <!--
       Stuff that JCT uses within tests, we need to copy these across to dogfood them correctly,