Ignore errors creating the PR

This can happen if the only changes in files are LF/CRLF 
from running the job on Windows rather than Linux (which we do because I couldn't figure out how to 
configure GCM yet with the Linux credentials store).

.github/workflows/dotnet-file.yml

@@ -70,6 +70,7 @@ jobs:
 
       - name: ✍ pull request
         uses: peter-evans/create-pull-request@v3
+        continue-on-error: true
         with:
           base: main
           branch: dotnet-file-sync