Update acs.aem.commons.version to v6.15.0 (#252)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

tooling/conga-aem-maven-plugin/src/it/example/pom.xml

@@ -39,7 +39,7 @@
   <description>Example definitions and templates.</description>
 
   <properties>
-    <acs.aem.commons.version>6.14.0</acs.aem.commons.version>
+    <acs.aem.commons.version>6.15.0</acs.aem.commons.version>
   </properties>
 
   <dependencies>

tooling/conga-aem-maven-plugin/src/it/mixed-no-package-type/pom.xml

@@ -39,7 +39,7 @@
   <description>Test case with packages with "mixed" package types, and packages without package type and "all" package.</description>
 
   <properties>
-    <acs.aem.commons.version>6.14.0</acs.aem.commons.version>
+    <acs.aem.commons.version>6.15.0</acs.aem.commons.version>
   </properties>
 
   <dependencies>

tooling/conga-aem-maven-plugin/src/it/wcmio-archetype-aem65/parent/pom.xml

@@ -30,7 +30,7 @@
 
     <!-- Versions -->
     <core.wcm.components.version>2.30.2</core.wcm.components.version>
-    <acs.aem.commons.version>6.14.0</acs.aem.commons.version>
+    <acs.aem.commons.version>6.15.0</acs.aem.commons.version>
 
     <!-- Enable reproducible builds -->
     <project.build.outputTimestamp>2021-01-01T00:00:00Z</project.build.outputTimestamp>

tooling/conga-aem-maven-plugin/src/it/wcmio-archetype-cloud/parent/pom.xml

@@ -29,7 +29,7 @@
     <eclipse.settings.nullanalysis>enabled</eclipse.settings.nullanalysis>
 
     <!-- Versions -->
-    <acs.aem.commons.version>6.14.0</acs.aem.commons.version>
+    <acs.aem.commons.version>6.15.0</acs.aem.commons.version>
 
     <!-- Enable reproducible builds -->
     <project.build.outputTimestamp>2021-01-01T00:00:00Z</project.build.outputTimestamp>