fix: remove date in the end of ubuntu base image version

[weiZhenkun]

CVE issues https://github.com/milvus-io/milvus/issues/31997 This PR will fix 32 LOW and 42 MEDIUM CVEs

ubuntu:focal-20220426 (ubuntu 20.04) Total: 99 (UNKNOWN: 0, LOW: 55, MEDIUM: 44, HIGH: 0, CRITICAL: 0) ubuntu:focal (ubuntu 20.04) Total: 25 (UNKNOWN: 0, LOW: 23, MEDIUM: 2, HIGH: 0, CRITICAL: 0)

[sre-ci-robot]

Welcome @weiZhenkun! It looks like this is your first PR to milvus-io/milvus 🎉

[mergify[bot]]

@weiZhenkun

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[weiZhenkun]

/run-cpu-e2e

[mergify[bot]]

@weiZhenkun E2e jenkins job failed, comment /run-cpu-e2e can trigger the job again.

[weiZhenkun]

@LoveEachDay could you review this PR?

[weiZhenkun]

@xiaofan-luan could you review this PR?

[LoveEachDay]

@weiZhenkun It's recommended to use a specific tag instead only focal, like focal-2024010.

[weiZhenkun]

https://github.com/zilliztech/attu/blob/main/Dockerfile#L22 https://github.com/milvus-io/bitnami-docker-etcd/blob/3.5.0-new/3.5/debian-11/Dockerfile#L1 what about here?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.20%. Comparing base (dd9919a) to head (9df6d8e). Report is 157 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #33073      +/-   ##
==========================================
+ Coverage   82.14%   82.20%   +0.05%     
==========================================
  Files        1006     1009       +3     
  Lines      128194   128856     +662     
==========================================
+ Hits       105306   105924     +618     
- Misses      18919    18944      +25     
- Partials     3969     3988      +19     

see 116 files with indirect coverage changes

[LoveEachDay]

https://github.com/zilliztech/attu/blob/main/Dockerfile#L22 https://github.com/milvus-io/bitnami-docker-etcd/blob/3.5.0-new/3.5/debian-11/Dockerfile#L1 what about here?

We don't release attu and etcd image frequently, while milvus image are building after every pr has been merged. So keep the runtime base image stable is critical.

[weiZhenkun]

/run-cpu-e2e

[weiZhenkun]

@LoveEachDay Change to latest version focal-20240427 now, please review, thanks.

[weiZhenkun]

/assign @yanliang567

[czs007]

/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czs007, LoveEachDay, weiZhenkun

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