Bump actions/cache from 2.1.6 to 2.1.7

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.6 to 2.1.7.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](actions/cache@v2.1.6...v2.1.7)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/maven.yml

@@ -41,7 +41,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2.4.0
-    - uses: actions/cache@v2.1.6
+    - uses: actions/cache@v2.1.7
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}

src/changes/changes.xml

@@ -330,6 +330,9 @@ The <action> type attribute can be add,update,fix,remove.
       <action dev="kinow" type="update" due-to="Dependabot">
         Bump junit-pioneer from 1.4.2 to 1.5.0 #304.
       </action>
+      <action dev="kinow" type="update" due-to="Dependabot">
+        Bump actions/cache from 2.1.6 to 2.1.7 #307.
+      </action>
     </release>
     <release version="2.11.0" date="2021-07-09" description="Java 8 required.">
       <!-- FIX -->