fix(action): update build environment to use ubuntu-latest and remove python3 patch step

Co-authored-by: Copilot <copilot@github.com>

.github/actions/build-kernel/action.yml

@@ -12,7 +12,5 @@ runs:
           SKIP_MRPROPER=1 GKI_DEFCONFIG_FRAGMENT="$GITHUB_WORKSPACE/wild_gki.fragment" BUILD_CONFIG=common/build.config.gki.aarch64 build/build.sh
         else
           cp "$GITHUB_WORKSPACE/wild_gki.fragment" common/arch/arm64/configs/wild_gki.fragment
-          export PYTHON3=/usr/bin/python3
-          export PATH="/usr/bin:$PATH"
           tools/bazel build --config=release --stamp --notrim --defconfig_fragment=//common:arch/arm64/configs/wild_gki.fragment //common:kernel_aarch64_dist
         fi

.github/workflows/build.yml

@@ -31,7 +31,7 @@ on:
 jobs:
   build-gki:
     name: "${{ inputs.kernel_version }} (${{ inputs.variant }})"
-    runs-on: ubuntu-24.04-arm
+    runs-on: ubuntu-latest
     timeout-minutes: 60
 
     steps:
@@ -80,12 +80,6 @@ jobs:
         kernel_version: ${{ steps.parse.outputs.kernel_version }}
         os_patch_level: ${{ steps.parse.outputs.os_patch_level }}
 
-
-
-    - name: Patch tools/bazel to use system python3 on ARM
-      run: |
-        sed -i 's|prebuilts/build-tools/linux_musl-x86/bin/py3-cmd|/usr/bin/python3|g' ${{ github.workspace }}/kernel/tools/bazel || true
-
     - name: Grep for vm_flags_clear after download
       run: |
         grep -n 'vm_flags_clear' ${{ github.workspace }}/kernel/common/mm/mmap.c || echo 'Not found'