Update CHANGELOG.md - Githubissues

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## Description > Provide a detailed description of the changes performed by the PR. ### Related Issues > Please list all the issues related to this PR. Use NA if no issues exist ### Ratified/Unratified Extensions - [ ] Ratified - [ ] Unratified ### List Extensions > List the extensions that your PR affects. In case of unratified extensions, please provide a link to the spec draft that was referred to make this PR. ### Reference Model Used - [ ] SAIL - [ ] Spike - [ ] Other - < SPECIFY HERE > ### Mandatory Checklist: - [ ] All tests are compliant with the test-format spec present in this repo ? - [ ] Ran the new tests on RISCOF with SAIL/Spike as reference model successfully ? - [ ] Ran the new tests on RISCOF in [coverage mode](https://riscof.readthedocs.io/en/stable/commands.html#coverage) - [ ] Link to Google-Drive folder containing the new coverage reports ([See this](https://github.com/riscv-non-isa/riscv-arch-test/blob/main/CONTRIBUTION.md#uploading-test-stats) for more info): < SPECIFY HERE > - [ ] Link to PR in RISCV-ISAC from which the reports were generated : < SPECIFY HERE > - [ ] Changelog entry created with a minor patch ### Optional Checklist: - [ ] RISCV-V CTG PR link if tests were generated using it : < SPECIFY HERE > - [ ] Were the tests hand-written/modified ? - [ ] Have you run these on any hard DUT model ? Please specify name and provide link if possible in the description - [ ] If you have modified arch\_test.h Please provide a detailed description of the changes in the Description section above.

riscv-non-isa / riscv-arch-test

Update CHANGELOG.md #463