Upgrade to GitHub-native Dependabot

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+- package-ecosystem: maven
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10

pom.xml

@@ -17,15 +17,15 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <tiles-maven-plugin.version>2.23</tiles-maven-plugin.version>
+        <tiles-maven-plugin.version>2.20</tiles-maven-plugin.version>
         <kemitix-maven-tiles.version>2.5.0</kemitix-maven-tiles.version>
         <kemitix-checkstyle.version>5.4.0</kemitix-checkstyle.version>
         <lombok.version>1.18.20</lombok.version>
-        <jgit.version>5.12.0.202106070339-r</jgit.version>
-        <assertj.version>3.20.2</assertj.version>
-        <junit.version>5.7.2</junit.version>
+        <jgit.version>5.11.0.202103091610-r</jgit.version>
+        <assertj.version>3.19.0</assertj.version>
+        <junit.version>5.7.1</junit.version>
         <mon.version>2.3.0</mon.version>
-        <mockito.version>3.11.2</mockito.version>
+        <mockito.version>3.9.0</mockito.version>
         <java-semver.version>0.9.0</java-semver.version>
         <conditional.version>1.0.0</conditional.version>
         <digraph-dependency.basePackage>net.kemitix.gitdb</digraph-dependency.basePackage>