chore: upgrade OPAL to 0.9.5 (#309)

* chore: upgrade OPAL to 0.9.5rc2

Bump opal-common and opal-client from 0.9.4 to 0.9.5rc2.

Stable 0.9.5 has not been released yet; using the latest RC so we
pick up upstream fixes/features ahead of the stable cut.

Notable changes since 0.9.4:
- fix(opal-server): per-source key for repos_last_fetched dedup cache
- feat(client): live liveness probe for OPA policy store
- fix: redoc url

Full changelog: permitio/opal@0.9.4...0.9.5-rc.2

* chore: upgrade OPAL to 0.9.5 GA

Bump opal-common and opal-client from 0.9.5rc2 to the now-released
0.9.5 stable.

Full changelog: permitio/opal@0.9.4...0.9.5

Author: omer9564

requirements.txt

@@ -17,5 +17,5 @@ httpx>=0.27.0,<1
 # google-re2 # use re2 instead of re for regex matching because it's simiplier and safer for user inputted regexes
 protobuf>=6.33.5 # pinned to avoid CVE-2026-0994
 cryptography>=46.0.5,<47 # pinned to avoid CVE-2026-26007
-opal-common==0.9.4
-opal-client==0.9.4
+opal-common==0.9.5
+opal-client==0.9.5