Fix efs daemonset

[hebelsan]

How to categorize this PR?

/area quality
/kind bug
/platform aws

What this PR does / why we need it:
#1717 introduced a bug in the efs daemonset.yaml.
The port range upper bound must be specified as string.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Release note:

NONE

[github-actions]

This change adds string quoting to the PORT_RANGE_UPPER_BOUND environment variable value in the EFS CSI driver node DaemonSet configuration, ensuring the port range upper bound value is properly handled as a string in the Kubernetes manifest.

Walkthrough

• Bug Fix: Fixed environment variable value formatting for the EFS CSI driver's port range configuration to prevent potential parsing issues in Kubernetes deployments.

_{Model: claude-sonnet-4-20250514 | Prompt Tokens: 356 | Completion Tokens: 97}

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AndreasBurger

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• OWNERS [AndreasBurger]

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[gardener-prow]

LGTM label has been added.

Details

Git tree hash: 92a19ec46fd9dca28e7575b06072a0edfd8e6591

[hebelsan]

/cla

[gardener-prow]

Successfully reached out to cla-assistant.io to initialize recheck of PR #1776