Update ropt dependency to 0.9.0

[verveerpj]

Issue
Updates to ropt==0.9.0.

Approach

• Fix code due to backwards incompatible changes

• Update pyproject.toml

• PR title captures the intent of the changes, and is fitting for release notes.

• Added appropriate release note label

• Commit history is consistent and clean, in line with the contribution guidelines.

• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'pytest tests/ert/unit_tests -n logical -m "not integration_test"')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Create Backport PR to latest release

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.73%. Comparing base (90d11ec) to head (9db026f).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/ert/run_models/everest_run_model.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9138      +/-   ##
==========================================
- Coverage   90.76%   90.73%   -0.04%     
==========================================
  Files         351      351              
  Lines       21895    21889       -6     
==========================================
- Hits        19874    19861      -13     
- Misses       2021     2028       +7     

Flag	Coverage Δ
cli-tests	39.22% <0.00%> (-0.03%)	⬇️
gui-tests	71.76% <0.00%> (+0.01%)	⬆️
performance-tests	49.42% <0.00%> (+0.05%)	⬆️
unit-tests	79.64% <66.66%> (-0.01%)	⬇️

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[DanSava]

Looks good 👍