update go.mod.tpl for modern values

[jaypipes]

We had an old Go version (1.14) and ancient deps listed in the default go.mod.tpl file. This updates to a more modern set of deps and Go version (1.19) which results in fewer iterations of go mod tidy when generating a bootstrapped controller.

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[ack-prow]

Hi @jaypipes. Thanks for your PR.

I'm waiting for a aws-controllers-k8s member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[a-hilaly]

+++
/lgtm

[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: A-Hilaly, jaypipes

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[a-hilaly]

/ok-to-test