Bump actions/cache from v2 to v2.1.4

Bumps [actions/cache](https://github.com/actions/cache) from v2 to v2.1.4.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2...26968a09c0ea4f3e233fdddbafd1166051a095f6)

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

.github/workflows/maven.yml

@@ -34,7 +34,7 @@ jobs:
         
     steps:
     - uses: actions/checkout@v2.3.4
-    - uses: actions/cache@v2
+    - uses: actions/cache@v2.1.4
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}

src/changes/changes.xml

@@ -246,6 +246,9 @@
     <action issue="COLLECTIONS-779" type="update" dev="ggregory" due-to="Arturo Bernal, Gary Gregory">
       Migrate assert to Assertions #209.
     </action>
+    <action type="update" dev="kinow" due-to="Dependabot">
+      Bump actions/cache from v2 to v2.1.4 #214.
+    </action>
   </release>
   <release version="4.4" date="2019-07-05" description="Maintenance release.">
     <action issue="COLLECTIONS-710" dev="ggregory" type="fix" due-to="Yu Shi, Gary Gregory">