Google seems to be testing moving the review stars from just under the title to below the description portion of the snippet. Google is also testing changing the color from orange to yellow. Here are screen shots I was able to replicate but I am not the only one seeing this.
The new look:
The old look:
Here are others seeing this:
— Ankit Srivastava (@VaranasiBlogger) April 6, 2020
Also in the local panel:
Google seems to be testing reviews stars colours in the SERPs:
— Kristina Azarenko (@azarchick) April 6, 2020
Forum discussion at Twitter.