fix: otel ci test error

[bzp2010]

Description

Fix an environment error in CI where the OTel Collector was working abnormally, causing tests that relied on it to always fail.

For example: https://github.com/apache/apisix/actions/runs/11949539768/job/33309196303?pr=11765

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the APISIX mailing list first)