[release/8.0-staging] Revert "Pin the Alpine Arm32 image to previous tag (#94683)"

[github-actions]

Backport of #95359 to release/8.0-staging

/cc @CarnaViire

Customer Impact

This is a test-only (infra-only) change.

This brings back the rolling "latest" image for Alpine Arm 32.

While pinning the image in #94609 mitigated the issue for System.Net.Quic tests, it was only temporary, as it prevents us from consuming any updates from the image.

Now, Quic issue was mitigated in a different way within the image itself, so it is safe to revert the pinning. And it will also allow us to fix dotnet/dnceng#1423.

Testing

CI (System.Net.Quic tests execute successfully on Alpine Arm 32)

Risk

N/A (test-only change)

cc @carlossanlop @hoyosjs @wfurt @ManickaP

IMPORTANT: If this backport is for a servicing release, please verify that:

• The PR target branch is release/X.0-staging, not release/X.0.

• If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.

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Issue Details

---

Backport of #95359 to release/8.0-staging

/cc @CarnaViire

Customer Impact

This is a test-only (infra-only) change.

This brings back the rolling "latest" image for Alpine Arm 32.

While pinning the image in #94609 mitigated the issue for System.Net.Quic tests, it was only temporary, as it prevents us from consuming any updates from the image.

Now, Quic issue was mitigated in a different way within the image itself, so it is safe to revert the pinning. And it will also allow us to fix dotnet/dnceng#1423.

Testing

CI (System.Net.Quic tests execute successfully on Alpine Arm 32)

Risk

N/A (test-only change)

IMPORTANT: If this backport is for a servicing release, please verify that:

• The PR target branch is release/X.0-staging, not release/X.0.

• If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.

Author:	github-actions[bot]
Assignees:	-
Labels:	area-Infrastructure, needs-area-label
Milestone:	-

[CarnaViire]

Test-only change, approved by area owners, CI is green. Adding the approved label & merging.