Bump java8-parent to 1.3, slf4j-api provided scope

Author: rbygrave

pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.avaje</groupId>
     <artifactId>java8-parent</artifactId>
-    <version>1.1</version>
+    <version>1.3</version>
   </parent>
 
   <artifactId>avaje-datasource</artifactId>
@@ -18,10 +18,6 @@
     <tag>HEAD</tag>
   </scm>
 
-  <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-  </properties>
-
   <dependencies>
 
     <dependency>
@@ -34,6 +30,7 @@
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
       <version>[1.7.12,)</version>
+      <scope>provided</scope>
     </dependency>
 
     <dependency>