Bump authlib from 1.6.5 to 1.6.11 in /samples/adk-sql-agent

Bumps [authlib](https://github.com/authlib/authlib) from 1.6.5 to 1.6.11.
- [Release notes](https://github.com/authlib/authlib/releases)
- [Changelog](https://github.com/authlib/authlib/blob/v1.6.11/docs/changelog.rst)
- [Commits](authlib/authlib@v1.6.5...v1.6.11)

---
updated-dependencies:
- dependency-name: authlib
  dependency-version: 1.6.11
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

samples/adk-sql-agent/requirements.txt

@@ -32,9 +32,9 @@ attrs==25.4.0 \
     # via
     #   jsonschema
     #   referencing
-authlib==1.6.5 \
-    --hash=sha256:3e0e0507807f842b02175507bdee8957a1d5707fd4afb17c32fb43fee90b6e3a \
-    --hash=sha256:6aaf9c79b7cc96c900f0b284061691c5d4e61221640a948fe690b556a6d6d10b
+authlib==1.6.11 \
+    --hash=sha256:64db35b9b01aeccb4715a6c9a6613a06f2bd7be2ab9d2eb89edd1dfc7580a38f \
+    --hash=sha256:c8687a9a26451c51a34a06fa17bb97cb15bba46a6a626755e2d7f50da8bff3e3
     # via google-adk
 cachetools==6.2.1 \
     --hash=sha256:09868944b6dde876dfd44e1d47e18484541eaf12f26f29b7af91b26cc892d701 \