chore(release): v0.1.9-nightly.250707.d1c0a211

Signing tags (google-gemini#3254)

chore(release): v0.1.9-rc.1

chore: bump version to 0.1.9 (google-gemini#2906)

Docs: Add a page detailing quota and cost information (google-gemini#…

…2894)

Co-authored-by: Jenna Inouye <jinouye@google.com>

fix: add missing gaxios dependency (google-gemini#2302)

Update Auth Label to include AI Studio (google-gemini#2130)

Co-authored-by: Allen Hutchison <adh@google.com>

Update Auth Label to include AI Studio (google-gemini#2130)

Co-authored-by: Allen Hutchison <adh@google.com>

bug: fix cancel after a tool has been used (google-gemini#1270)