Set minimumExpectedPekkoVersion to 1.0.0

[mdedetrich]

Resolves #327 (comment)

[pjfanning]

This looks wrong - in test logs.

[info] Building Pekko HTTP 1.1.0-M0+12-1b020099+20231010-1800-SNAPSHOT against Pekko 1.0.0 on Scala 2.12.18

I think we need to fix the build so that it tests against Pekko 1.0.1 - the latest 1.0.x release - or we could test with the latest 1.0.x snapshot. I think it is bad to test with Pekko 1.0.0.

[mdedetrich]

@pjfanning So whether or not to use the snapshot is derived by the "pekko.http.build.pekko.version" which you can see here https://github.com/apache/incubator-pekko-http/blob/7f1441ee25d864a9cbc441eba92199598e26ea01/project/PekkoDependency.scala#L45

and currently this is being set for nightlies, i.e.
https://github.com/apache/incubator-pekko-http/blob/57dcb5dcc64b4c269d83a01909a7a39dcd32bf71/.github/workflows/nightly.yml#L44-L48

You can verify this by looking at https://github.com/apache/incubator-pekko-http/actions/runs/6463888406/job/17547697024, i.e.

[info] Building Pekko HTTP 1.1.0-M0+10-4eccd171+20231010-0214-SNAPSHOT against Pekko 1.1.0-M0+101-1b1f5722-SNAPSHOT on Scala 2.12.18

I think this is fine and intentional, i.e. we really should set minimumExpectedPekkoVersion to be 1.0.0 because its not correct that Pekko Http requires 1.0.1 and its basically breaking end users.

[pjfanning]

lgtm - I'll check the nightlies logs in the morning just in case