[cherry-pick] increase default expiry for signed url

[HumairAK]

cherry-pick: #676

[openshift-ci]

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[dsp-developers]

A new image has been built to help with testing out this PR: quay.io/opendatahub/data-science-pipelines-operator:pr-677
An OCP cluster where you are logged in as cluster admin is required.

To use this image run the following:

cd $(mktemp -d)
git clone [email protected]:opendatahub-io/data-science-pipelines-operator.git
cd data-science-pipelines-operator/
git fetch origin pull/677/head
git checkout -b pullrequest f4c38734ad2024c73683e81096f752ab0e65c122
oc new-project opendatahub
make deploy IMG="quay.io/opendatahub/data-science-pipelines-operator:pr-677"

More instructions here on how to deploy and test a Data Science Pipelines Application.