Work around git dubious ownership

Signed-off-by: James Wainwright <[email protected]>

Author: jwnrt

.github/workflows/toolchain_build.yml

@@ -111,6 +111,9 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
+          # Git warns about this repo having dubious ownership - ignore.
+          git config --global --add safe.directory /__w/lowrisc-toolchains/lowrisc-toolchains
+
           # Create the release if it doesn't already exist.
           gh release create "$RELEASE_TAG" --prerelease || echo "release exists"
           # Upload this job's artifacts.