fix: multiple merge conflicts

[Garzas]

---

PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

---

What's new in this PR?

Issues

When there was more than one merge conflict automatic cherry pick failed

Solutions

• Use awk to set the Output Record Separator (ORS) to \n, which echo -e in bash can interpret as a newline
• Pipe the output to sed to replace the last \n with \n, to don't end up with an extra newline at the end.
• Move PR_BODY to script to handle properly variable formatting

[AndroidBob]

Build 1710 succeeded.

The build produced the following APK's:

• com.wire.android-v4.4.2(8053525)(8053525)-staging-compat.apk

[AndroidBob]

Build 1726 succeeded.

The build produced the following APK's:

• com.wire.android-v4.4.2(8061361)(8061361)-staging-compat.apk

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 1771 succeeded.

The build produced the following APK's:

• com.wire.android-v4.4.2(8090909)(8090909)-staging-compat.apk