SLING-11992 - Maven 3.9.2+ reports plugin validation issue on htl-maven-plugin

Use provided scope for Maven depdendencies.
diff --git a/pom.xml b/pom.xml
index 3c1f3dd..08c8c7d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -126,14 +126,17 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-plugin-api</artifactId>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-model</artifactId>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-core</artifactId>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.maven.plugin-tools</groupId>