chore: add template for PR to consider the helm chart change

.github/pull_request_template.md

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+<!-- 
+Thanks for your contribution! 
+Please follow the instructions on your PRs title and description.
+aligned title description: '(feat|fix|chore|doc): _description of introduced change_'
+Important: Contributing Guidelines can be found here: https://eclipse-tractusx.github.io/docs/oss/how-to-contribute
+Info: <!- text comments ->  will be hidden from the rendered preview of your PR.
+-->
+
+## Description
+<!-- 
+Please describe your PR: 
+- What does this PR introduce? 
+- Does it fix a bug? 
+- Does it add a new feature?
+- Is it enhancing documentation?
+-->
+
+<!-- Please tag the related issue `Fixes or Updates #issue_number`, if applicable. -->
+
+## Pre-review checks
+
+Please ensure to do as many of the following checks as possible, before asking for committer review:
+
+- [ ] DEPENDENCIES are up-to-date. [Dash license tool](https://github.com/eclipse/dash-licenses). Committers can open IP issues for restricted libs.
+- [ ] [Copyright and license header](https://eclipse-tractusx.github.io/docs/release/trg-7/trg-7-02) are present on all affected files
+- [ ] If helm chart has been changed, the chart version has been bumped to either next major, minor or patch level (compared to released chart).