fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1021614
- https://snyk.io/vuln/SNYK-JAVA-C3P0-461017
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-32384
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-32385
- https://snyk.io/vuln/SNYK-JAVA-C3P0-461018
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1090340
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-451464
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-32381
- https://snyk.io/vuln/SNYK-JAVA-ORGXERIAL-5596891
- https://snyk.io/vuln/SNYK-JAVA-COMMONSIO-1277109
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-31399
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-1766958
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-32383
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-460763
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1080611
- https://snyk.io/vuln/SNYK-JAVA-COMMONSIO-8161190
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-2386864
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLECODEGSON-1730327
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-31580
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-174574
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-32236
- https://snyk.io/vuln/SNYK-JAVA-ORGQUARTZSCHEDULER-461170
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-1015415
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-174560
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-461008
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-461009
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-5969350
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1047304
- https://snyk.io/vuln/SNYK-JAVA-COMMONSCODEC-561518
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-5710356
- https://snyk.io/vuln/SNYK-JAVA-MYSQL-31449
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-1313686
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-2945452
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-2945453

Author: snyk-bot

pom.xml

@@ -9,7 +9,7 @@
     <url>http://maven.apache.org</url>
     <properties>
         <jdk.version>1.11</jdk.version>
-        <spark.version>2.7.2</spark.version>
+        <spark.version>2.9.4</spark.version>
         <spark.freemarker.version>2.0.0</spark.freemarker.version>
         <freemarker.version>2.3.23</freemarker.version>
         <dbcp.version>2.1.1</dbcp.version>
@@ -45,13 +45,13 @@
         <dependency>
             <groupId>org.xerial</groupId>
             <artifactId>sqlite-jdbc</artifactId>
-            <version>3.8.6</version>
+            <version>3.41.2.2</version>
         </dependency>
         <!-- MySQL/Sphinx http://sphinxsearch.com/forum/view.html?id=16178 must be version 5.1.35 -->
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.35</version>
+            <version>8.0.28</version>
         </dependency>
         <!--  Connection pool -->
         <dependency>
@@ -68,26 +68,26 @@
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.10</version>
+            <version>1.14</version>
         </dependency>
         <!--  Gson: Java to Json conversion -->
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.9</version>
             <scope>compile</scope>
         </dependency>
         <!-- Guava, generally awesome -->
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>18.0</version>
+            <version>32.0.0-android</version>
         </dependency>
         <!-- Quartz Job Scheduler -->
         <dependency>
             <groupId>org.quartz-scheduler</groupId>
             <artifactId>quartz</artifactId>
-            <version>2.2.2</version>
+            <version>2.3.2</version>
         </dependency>
         <dependency>
             <groupId>org.quartz-scheduler</groupId>
@@ -110,7 +110,7 @@
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
-            <version>2.4</version>
+            <version>2.14.0</version>
         </dependency>
         <!-- Charset guesser -->
         <dependency>
@@ -150,7 +150,7 @@
         <dependency>
             <groupId>org.zeroturnaround</groupId>
             <artifactId>zt-exec</artifactId>
-            <version>1.10</version>
+            <version>1.11</version>
         </dependency>
         <!-- Cache Layer -->
         <dependency>