[0.8.4] Bump version, update to core 0.8.4 and Jackson 2.12.1.

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>cz.cvut.kbss.jsonld</groupId>
     <artifactId>jb4jsonld-jackson</artifactId>
-    <version>0.8.3</version>
+    <version>0.8.4</version>
     <name>JB4JSON-LD-Jackson</name>
     <description>JB4JSON-LD integration for Jackson.</description>
     <url>https://github.com/kbss-cvut/jb4jsonld-jackson</url>
@@ -16,11 +16,11 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
 
-        <cz.cvut.kbss.jb4jsonld.version>0.8.3</cz.cvut.kbss.jb4jsonld.version>
+        <cz.cvut.kbss.jb4jsonld.version>0.8.4</cz.cvut.kbss.jb4jsonld.version>
         <org.junit.jupiter.version>5.6.2</org.junit.jupiter.version>
         <org.mockito.version>3.4.0</org.mockito.version>
         <ch.qos.logback.version>1.2.3</ch.qos.logback.version>
-        <com.fasterxml.jackson.version>2.12.0</com.fasterxml.jackson.version>
+        <com.fasterxml.jackson.version>2.12.1</com.fasterxml.jackson.version>
         <com.github.jsonld-java.version>0.13.2</com.github.jsonld-java.version>
         <org.eclipse.rdf4j.version>3.5.0</org.eclipse.rdf4j.version>
     </properties>