Only add python-isolate dependency when that is what we are testing

Author: timfel

graalpython/com.oracle.graal.python.test.integration/pom.xml

@@ -150,6 +150,23 @@ Additionally, one can change the polyglot artifacts version with
                 </repository>
             </repositories>
         </profile>
+        <profile>
+            <id>isolate</id>
+            <activation>
+                <property>
+                    <name>polyglot.engine.SpawnIsolate</name>
+                </property>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>org.graalvm.polyglot</groupId>
+                    <artifactId>python-isolate</artifactId>
+                    <version>${com.oracle.graal.python.test.polyglot.version}</version>
+                    <scope>runtime</scope>
+                    <type>pom</type>
+                </dependency>
+            </dependencies>
+        </profile>
     </profiles>
 
     <dependencies>
@@ -165,13 +182,6 @@ Additionally, one can change the polyglot artifacts version with
             <scope>runtime</scope>
             <type>pom</type>
         </dependency>
-        <dependency>
-            <groupId>org.graalvm.polyglot</groupId>
-            <artifactId>python-isolate</artifactId>
-            <version>${com.oracle.graal.python.test.polyglot.version}</version>
-            <scope>runtime</scope>
-            <type>pom</type>
-        </dependency>
         <dependency>
             <groupId>org.graalvm.python</groupId>
             <artifactId>python-embedding</artifactId>