update to log4j2 2.20.0, bump version

Author: vsch

.idea/libraries/apache_logging_log4j_1_2_api.xml

@@ -7,7 +7,7 @@
     <parent>
         <groupId>com.vladsch.flexmark</groupId>
         <artifactId>flexmark-java</artifactId>
-        <version>0.64.2</version>
+        <version>0.64.4</version>
     </parent>
 
     <artifactId>flexmark-all</artifactId>

.idea/libraries/apache_logging_log4j_api.xml

@@ -49,5 +49,7 @@
     <orderEntry type="library" name="Maven: net.sf.jopt-simple:jopt-simple:4.6" level="project" />
     <orderEntry type="library" name="Maven: org.apache.commons:commons-math3:3.2" level="project" />
     <orderEntry type="library" name="Maven: junit:junit:4.13" level="project" />
+    <orderEntry type="library" name="apache.logging.log4j.api" level="project" />
+    <orderEntry type="library" name="apache.logging.log4j.1.2.api" level="project" />
   </component>
-</module>
+</module>

.idea/libraries/apache_logging_log4j_core.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.vladsch.flexmark</groupId>
         <artifactId>flexmark-java</artifactId>
-        <version>0.64.2</version>
+        <version>0.64.4</version>
     </parent>
 
     <artifactId>flexmark-core-test</artifactId>

flexmark-all/pom.xml

@@ -60,5 +60,8 @@
     <orderEntry type="library" name="slf4j.log4j.over" level="project" />
     <orderEntry type="library" name="slf4j-api-1.7.26" level="project" />
     <orderEntry type="library" name="docx4j.JAXB.ReferenceImpl" level="project" />
+    <orderEntry type="library" name="apache.logging.log4j.core" level="project" />
+    <orderEntry type="library" name="apache.logging.log4j.api" level="project" />
+    <orderEntry type="library" name="apache.logging.log4j.1.2.api" level="project" />
   </component>
 </module>

flexmark-core-test/flexmark-core-test.iml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.vladsch.flexmark</groupId>
         <artifactId>flexmark-java</artifactId>
-        <version>0.64.2</version>
+        <version>0.64.4</version>
     </parent>
 
     <artifactId>flexmark-docx-converter</artifactId>

flexmark-core-test/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.vladsch.flexmark</groupId>
         <artifactId>flexmark-java</artifactId>
-        <version>0.64.2</version>
+        <version>0.64.4</version>
     </parent>
 
     <artifactId>flexmark-ext-abbreviation</artifactId>

flexmark-docx-converter/flexmark-docx-converter.iml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.vladsch.flexmark</groupId>
         <artifactId>flexmark-java</artifactId>
-        <version>0.64.2</version>
+        <version>0.64.4</version>
     </parent>
 
     <artifactId>flexmark-ext-admonition</artifactId>