Change pom repository reference value to https

[kppullin]

trafficstars

Similar to https://github.com/confluentinc/common/pull/341, change the pom's repository value to https as now required by default with newer versions of maven (3.8.1+, ref: https://issues.apache.org/jira/browse/MNG-7118).

[ghost]

@confluentinc It looks like @kppullin just signed our Contributor License Agreement. :+1:

Always at your service,

clabot

[kppullin]

It's worth noting that this change doesn't completely fix compilation issues by itself, since the version of the parent pom referenced in this project also uses http and not https. While this has been fixed in the parent pom, until the parent version is updated as well, those using newer versions of maven will have to hack around the https requirement.

[NickUfer]

Any progress on this?

[cla-assistant[bot]]

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