fix(docker): upgrades go version to 1.25.1

[wilsoniya]

Upgrades version of Go used in Dockerfile, fixing a failure caused while building container images:

[1/2] STEP 6/8: RUN go mod download
go: go.mod requires go >= 1.25.1 (running go 1.24.3; GOTOOLCHAIN=local)
subprocess exited with status 1

[NGTmeaty]

Thank you!

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.45%. Comparing base (0837f4d) to head (e9cef48).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #480      +/-   ##
==========================================
+ Coverage   56.42%   56.45%   +0.03%     
==========================================
  Files         130      130              
  Lines        8091     8091              
==========================================
+ Hits         4565     4568       +3     
+ Misses       3161     3157       -4     
- Partials      365      366       +1     

Flag	Coverage Δ
e2etests	40.74% <ø> (+0.08%)	⬆️
unittests	29.33% <ø> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 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.