Fix readme to indicate jq is 1.7.1
Description
Update readme to match shipping version and other readmes
Other readmes show the triple (https://github.com/search?q=repo%3Aactions%2Frunner-images+jq+language%3AMarkdown&type=code&l=Markdown): https://github.com/actions/runner-images/blob/c471ba13993a4f5cf9979179d06da69fd7d31038/images/windows/Windows2025-Readme.md?plain=1#L73 https://github.com/actions/runner-images/blob/c471ba13993a4f5cf9979179d06da69fd7d31038/images/windows/Windows2019-Readme.md?plain=1#L73 https://github.com/actions/runner-images/blob/c471ba13993a4f5cf9979179d06da69fd7d31038/images/windows/Windows2022-Readme.md?plain=1#L73
And this readme says elsewhere that it's actually 1.7.1: https://github.com/actions/runner-images/blob/c471ba13993a4f5cf9979179d06da69fd7d31038/images/ubuntu/Ubuntu2404-Readme.md?plain=1#L280
Related issue:
Check list
- [ ] Related issue / work item is attached
- [ ] Tests are written (if applicable)
- [ ] Documentation is updated (if applicable)
- [ ] Changes are tested and related VM images are successfully generated