update 7zip image for image-builder

[peirulu]

Issue #, if available:

Description of changes:
The image-builder presubmit is failing with error

(/home/prow/go/src/github.com/aws/eks-anywhere-build-tooling/projects/kubernetes-sigs/image-builder) $ curl -L https://www.7-zip.org/a/7z2406-linux-x64.tar.xz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100   162  100   162    0     0    226      0 --:--:-- --:--:-- --:--:--   226
100   162  100   162    0     0    226      0 --:--:-- --:--:-- --:--:--   226
xz: (stdin): File format not recognized
tar: Child returned status 1
tar: Error is not recoverable: exiting now
make: *** [fake-ubuntu-2004-ova.ova] Error 2
make: Leaving directory `/home/prow/go/src/github.com/aws/eks-anywhere-build-tooling/projects/kubernetes-sigs/image-builder'

Later find out the image https://www.7-zip.org/a/7z2406-linux-x64.tar.xz doesn't exist, thus change the image to https://www.7-zip.org/a/7z2600-linux-x64.tar.xz

Testing:

• Proof of https://www.7-zip.org/a/7z2406-linux-x64.tar.xz doesn't exist
  • curl -s -o /dev/null -w "%{h ttp_code}" https://www.7-zip.org/a/7z 2408-linux-x64.tar.xz 404
• Proof of https://www.7-zip.org/a/7z2600-linux-x64.tar.xz`
  • curl -s -o /dev/null -w "%{http_code}" https://www.7-zip.org/a/7z2600-linux-x64.tar.xz 200

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[peirulu]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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[peirulu]

/cherry-pick release-0.25
/cherry-pick release-0.24

[eks-distro-pr-bot]

@peirulu: new pull request created: #5288

Details

In response to this:

/cherry-pick release-0.25
/cherry-pick release-0.24

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[eks-distro-pr-bot]

@peirulu: new pull request created: #5289

Details

In response to this:

/cherry-pick release-0.25
/cherry-pick release-0.24

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.