Upgrade gradle version

[ningyougang]

• due to openwhisk repo's gradle is upgraded to 6.9, it is better to upgrade runtime as well.

[ningyougang]

Fix issue

go get: installing executables with 'go get' in module mode is deprecated.
	Use 'go install pkg@version' instead.
	For more information, see https://golang.org/doc/go-get-install-deprecation
	or run 'go help get' or 'go help install'.
# github.com/rivo/uniseg
pkg/mod/github.com/rivo/uniseg@v0.3.1/properties.go:130:6: missing function body
pkg/mod/github.com/rivo/uniseg@v0.3.1/properties.go:130:20: syntax error: unexpected [, expecting (
note: module requires Go 1.18

[ningyougang]

Fix

scalafmt-core is deprecated in jcenter, should use mavenCentral()
And need to keep jcenter() due to exist some lib needs this

[ningyougang]

Applied this pr's content to #170 due to this pr: apache/openwhisk#5290

Otherwise below test case will be failed

runtime.actionContainers.ActionLoopBasicTests > runtime proxy should run and report an error for function not returning a json object FAILED
    org.scalatest.exceptions.TestFailedException: Some({"error":"The action did not return a dictionary."}) was not equal to Some({"error":"The action did not return a dictionary or array."})
        at org.scalatest.MatchersHelper$.indicateFailure(MatchersHelper.scala:343)
        at org.scalatest.Matchers$ShouldMethodHelper$.shouldMatcher(Matchers.scala:6723)
        at org.scalatest.Matchers$AnyShouldWrapper.should(Matchers.scala:6759)
...

[ningyougang]

So closed

[style95]

I think this change is one big milestone and worth having a separate commit for this.
How about merging this PR first?

[upgle]

Please reopen this PR. I also think this PR should be merged first.

[ningyougang]

@style95 @upgle i have repened, but i am not sure when the test case failed whether can merge this pr. e.g. below relative test case will be failed (I tested in my local)

runtime.actionContainers.ActionLoopBasicTests > runtime proxy should run and report an error for function not returning a json object FAILED
    org.scalatest.exceptions.TestFailedException: Some({"error":"The action did not return a dictionary."}) was not equal to Some({"error":"The action did not return a dictionary or array."})
        at org.scalatest.MatchersHelper$.indicateFailure(MatchersHelper.scala:343)
        at org.scalatest.Matchers$ShouldMethodHelper$.shouldMatcher(Matchers.scala:6723)
        at org.scalatest.Matchers$AnyShouldWrapper.should(Matchers.scala:6759)
...

The reason is
https://github.com/apache/openwhisk/pull/5290/files#diff-af225dd78c7ac7e8e1232021f772d725b544a00a87b747865af4f15eaa338768R176

[upgle]

@ningyougang Does this error message also occur in the current master branch?

"The action did not return a dictionary or array"

[ningyougang]

@ningyougang Does this error message also occur in the current master branch?

"The action did not return a dictionary or array"

Yes. this go runtime pr's code line can solve it

[upgle]

understand. Since it is a change of core, all sub-runtime projects will have the same issue.
Although the array return type is not supported yet, it is planned to be supported, so it seems that the message content modification can be dealt with in this PR for passing the test.

[ningyougang]

understand. Since it is a change of core, all sub-runtime projects will have the same issue. Although the array return type is not supported yet, it is planned to be supported, so it seems that the message content modification can be dealt with in this PR for passing the test.

Got your point, fixed here: https://github.com/apache/openwhisk-runtime-go/pull/172/files#diff-c67a70867d3e68d8c9b4a4aa4ae76dc9362d2047ac0615e531d3d1bcec579892R87

[upgle]

LGTM, test cases are passed.