Update branch name for Oneui8 in workflow

made it 928b-oneui8-bit4, since it also goes to bit5 now

.github/workflows/kernel-samsung.yml

@@ -18,7 +18,7 @@ jobs:
           - branch: "SM-S928B-Oneui7"
             android_version: "android14"
             kernel_version: "6.1"
-          - branch: "SM-S928B-Oneui8"
+          - branch: "SM-S928B-Oneui8-bit4"
             android_version: "android14"
             kernel_version: "6.1"
           - branch: "SM-S928B-Oneui6.1"