[EXPERIMENT] test with pekko 1.1.0-M1

[pjfanning]

Before submitting pull request:

• [ ] Check if the project compiles by running sbt compile
• [ ] Verify docs compilation by running sbt compileDocs
• [ ] Check if tests pass by running sbt test
• [ ] Format code by running sbt scalafmt

Just running a build to see if Pekko 1.1.0-M1 breaks anything.

[kciesielski]

Looks promising :crossed_fingers: