Fix omitted item in CHANGES

Signed-off-by: Larry Gritz <[email protected]>

Author: lgritz

CHANGES.md

@@ -8,6 +8,7 @@ Beta 2 - Oct 29, 2024 (changes vs beta1)
   - *font rendering*: Fix incorrect vertical alignment in render_text [#4500](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4500) (by peterhorvath111)
   - *font rendering*: Windows newline shows invalid character in text render [#4501](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4501) (by peterhorvath111)
   - *font rendering*: Update font enumeration [#4508](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4508) (by peterhorvath111)
+  - *perf*: ImageBuf file read performance -- double reads, extra copies [#4507](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4507) (3.0.0.1)
   - *perf*: Additional timing logging for performance investigations [#4506](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4506)
   - *iinfo*: iinfo was not reading MIP levels correctly [#4498](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4498)
   - *int*: Address fmt exceptions for left justification [#4510](https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/4510)