chore: update pipeline.yml, migration 56 database from env

[iutx]

What this PR does / why we need it:

update pipeline.yml, migration 56 database from env

Which issue(s) this PR fixes:

• Fixes #your-issue_number
• [Erda Cloud Issue Link](paste your link here)

Specified Reviewers:

/assign @sfwn

ChangeLog

Language	Changelog
🇺🇸 English	update pipeline.yml, migration 56 database from env
🇨🇳 中文	更新 pipeline.yml migration 56 数据库从环境变量获取

Need cherry-pick to release versions?

Add comment like /cherry-pick release/1.0 when this PR is merged.

For details on the cherry pick process, see the cherry pick requests section under CONTRIBUTING.md.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 15.61%. Comparing base (ed1aeb6) to head (16bff9a).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6452   +/-   ##
=======================================
  Coverage   15.61%   15.61%           
=======================================
  Files        3674     3674           
  Lines      311277   311277           
=======================================
  Hits        48604    48604           
  Misses     257248   257248           
  Partials     5425     5425           

Flag	Coverage Δ
by-github-actions	15.61% <ø> (ø)

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[sfwn]

/approve