gradle version 5 (#18)

diff --git a/core/dotnet2.2/proxy/gradle/wrapper/gradle-wrapper.properties b/core/dotnet2.2/proxy/gradle/wrapper/gradle-wrapper.properties
index 5d28e48..d475d27 100644
--- a/core/dotnet2.2/proxy/gradle/wrapper/gradle-wrapper.properties
+++ b/core/dotnet2.2/proxy/gradle/wrapper/gradle-wrapper.properties
@@ -14,9 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-bin.zip
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ac3eb70..d475d27 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -14,9 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-bin.zip