upgrade pekko and build tool versions

[pjfanning]

• pekko 1.0.2

[He-Pin]

gradle tests is down

    java.lang.IllegalStateException: You are using version 1.0.2 of Apache Pekko, but it appears you (perhaps indirectly) also depend on older versions of related artifacts. You can solve this by adding an explicit dependency on version 1.0.2 of the [pekko-stream-testkit, pekko-testkit] artifacts to your project. Here's a complete collection of detected artifacts: (1.0.1, [pekko-stream-testkit, pekko-testkit]), (1.0.2, [pekko-actor, pekko-discovery, pekko-protobuf-v3, pekko-stream]). See also: 

[pjfanning]

gradle tests is down

    java.lang.IllegalStateException: You are using version 1.0.2 of Apache Pekko, but it appears you (perhaps indirectly) also depend on older versions of related artifacts. You can solve this by adding an explicit dependency on version 1.0.2 of the [pekko-stream-testkit, pekko-testkit] artifacts to your project. Here's a complete collection of detected artifacts: (1.0.1, [pekko-stream-testkit, pekko-testkit]), (1.0.2, [pekko-actor, pekko-discovery, pekko-protobuf-v3, pekko-stream]). See also: 

thanks - I'll have a look at the Gradle tests to see why this is happening (but maybe not tonight)

[He-Pin]

Add a group of explict deps to make sure all pekko version keeps in sync

[He-Pin]

https://plugins.jetbrains.com/plugin/22427-sbt-dependency-analyzer
This plugin from @jxnu-liguobin can help

[pjfanning]

@He-Pin test issue fixed - the 1.0.1 version appears in a few places

[He-Pin]

Lgtm

[mdedetrich]

lgtm