Update CS-repo2docker to 2026.06.0

[chiku-samugari]

CS-repo2dockerを2026.06.0に更新するPRです。

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.32%. Comparing base (773c6fb) to head (f4e7c55).
⚠️ Report is 29 commits behind head on master.
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

❗ There is a different number of reports uploaded between BASE (773c6fb) and HEAD (f4e7c55). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (773c6fb)	HEAD (f4e7c55)
	8	6

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #28       +/-   ##
===========================================
- Coverage   77.59%   39.32%   -38.28%     
===========================================
  Files          44       28       -16     
  Lines        3616     3329      -287     
  Branches       47        0       -47     
===========================================
- Hits         2806     1309     -1497     
- Misses        785     2020     +1235     
+ Partials       25        0       -25     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.