Bump actions/cache from 2.1.5 to 2.1.6

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.5 to 2.1.6.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2.1.5...v2.1.6)

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 65bdac0..7095402 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -32,7 +32,7 @@
         
     steps:
     - uses: actions/checkout@v2.3.4
-    - uses: actions/cache@v2.1.5
+    - uses: actions/cache@v2.1.6
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 9735dc4..8c49c45 100755
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -51,7 +51,7 @@
       <action type="update" dev="ggregory">Update commons.jacoco.version 0.8.5 to 0.8.6 (Fixes Java 15 builds).</action>
       <action type="update" dev="ggregory">Update checkstyle from 8.35 to 8.36.1 #12 #14.</action>
       <action type="update" dev="ggregory" due-to="Arturo Bernal">Minor Improvements #34.</action>
-      <action type="update" dev="kinow" due-to="Dependabot">Bump actions/cache from v2 to v2.1.5 #38 #50.</action>
+      <action type="update" dev="kinow" due-to="Dependabot">Bump actions/cache from v2 to v2.1.6 #38 #50 #56.</action>
       <action type="update" dev="kinow" due-to="Dependabot">Bump maven.plugin.version from 3.6.0 to 3.6.1 #54.</action>
       <action type="update" dev="kinow" due-to="Dependabot">Bump jacoco-maven-plugin from 0.8.6 to 0.8.7 #55.</action>
     </release>