chore: consistently use Lumo theme in ITs (#7430)

Author: sissbruecker

vaadin-avatar-flow-parent/vaadin-avatar-flow-integration-tests/pom.xml

@@ -58,6 +58,10 @@
             <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <artifactId>vaadin-lumo-theme</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>
             <artifactId>vaadin-testbench-core</artifactId>

vaadin-board-flow-parent/vaadin-board-flow-integration-tests/pom.xml

@@ -50,6 +50,10 @@
             <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <artifactId>vaadin-lumo-theme</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>
             <artifactId>vaadin-testbench-core</artifactId>

vaadin-icons-flow-parent/vaadin-icons-flow-integration-tests/pom.xml

@@ -53,6 +53,10 @@
             <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <artifactId>vaadin-lumo-theme</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>
             <artifactId>vaadin-ordered-layout-flow</artifactId>

vaadin-virtual-list-flow-parent/vaadin-virtual-list-flow-integration-tests/pom.xml

@@ -55,6 +55,10 @@
             <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.vaadin</groupId>
+            <artifactId>vaadin-lumo-theme</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>
             <artifactId>vaadin-ordered-layout-flow</artifactId>