FREEMARKER-168 Upgrade dependencies of freemarker-generator (#24)

diff --git a/freemarker-generator-cli/CHANGELOG.md b/freemarker-generator-cli/CHANGELOG.md
index 7b72c15..2b564b3 100644
--- a/freemarker-generator-cli/CHANGELOG.md
+++ b/freemarker-generator-cli/CHANGELOG.md
@@ -41,6 +41,7 @@
 ### Internal
 * [FREEMARKER-164] Use default unsafe FreeMarker configuration
 * [FREEMARKER-153] FreeMarker Generator release preparations
+* [FREEMARKER-168] Upgrade dependencies of freemarker-generator
 
 [FREEMARKER-127]: https://issues.apache.org/jira/browse/FREEMARKER-127
 [FREEMARKER-128]: https://issues.apache.org/jira/browse/FREEMARKER-128
@@ -60,4 +61,5 @@
 [FREEMARKER-153]: https://issues.apache.org/jira/browse/FREEMARKER-153
 [FREEMARKER-155]: https://issues.apache.org/jira/browse/FREEMARKER-155
 [FREEMARKER-163]: https://issues.apache.org/jira/browse/FREEMARKER-163
-[FREEMARKER-164]: https://issues.apache.org/jira/browse/FREEMARKER-164
\ No newline at end of file
+[FREEMARKER-164]: https://issues.apache.org/jira/browse/FREEMARKER-164
+[FREEMARKER-168]: https://issues.apache.org/jira/browse/FREEMARKER-168
\ No newline at end of file
diff --git a/freemarker-generator-tools/pom.xml b/freemarker-generator-tools/pom.xml
index c533a6d..97a2dfd 100644
--- a/freemarker-generator-tools/pom.xml
+++ b/freemarker-generator-tools/pom.xml
@@ -98,6 +98,12 @@
             <groupId>com.github.javafaker</groupId>
             <artifactId>javafaker</artifactId>
             <version>1.0.2</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.yaml</groupId>
+                    <artifactId>snakeyaml</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
         <!-- JsonPath Tool -->
         <dependency>
@@ -115,7 +121,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.26</version>
+            <version>1.27</version>
         </dependency>
         <!-- Testing -->
         <dependency>