build(deps): bump izettle-oss from 3.4.3 to 3.7.0

Bumps [izettle-oss](https://github.com/iZettle/izettle-maven) from 3.4.3 to 3.7.0.
- [Release notes](https://github.com/iZettle/izettle-maven/releases)
- [Commits](https://github.com/iZettle/izettle-maven/commits)

---
updated-dependencies:
- dependency-name: com.izettle:izettle-oss
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.izettle</groupId>
         <artifactId>izettle-oss</artifactId>
-        <version>3.4.3</version>
+        <version>3.7.0</version>
         <relativePath />
     </parent>
     <artifactId>metrics-parent</artifactId>