updated the memory resource for tekton resources to prevent OOMKills

[ab-ghosh]

This PR increases the memory resource limits for the following components to reduce OOM-related instability:

• pipeline-metrics-exporter
  
   Was occasionally consuming its full 6 GiB allocation, leading to instability.
  
    Increased memory limits to improve reliability and prevent potential OOM issues.
  

• tekton-pipeline-remote-resolver
  
    Also observed to use up its full 8 GiB memory allocation intermittently.
  
    Increased memory limits to improve reliability and prevent potential OOM issues.
  

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ab-ghosh
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[openshift-ci]

Hi @ab-ghosh. Thanks for your PR.

I'm waiting for a redhat-appstudio 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.

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[enarha]

/ok-to-test

[aThorp96]

/ok-to-test