fix: bump xblocks-contrib to match master's app-code changes

Master's xblocks-contrib upgrade (#38988, v0.17.0 -> v1.0.5) restructured
the package's internal modules and updated application code to match
(e.g. imports from xblocks_contrib.problem.capa.testing). That app-code
change merged cleanly (no git conflict), but xblocks-contrib is
unconstrained in our pyproject.toml, so a plain `uv lock` kept it at the
old 0.17.0 -- breaking pylint/unit-test collection with
ModuleNotFoundError. Bumped via `uv lock --upgrade-package xblocks-contrib`;
verified the new module path exists in the installed package.

Author: Irfan Ahmad

requirements/edx/base.txt

@@ -1301,7 +1301,7 @@ xblock==6.3.1
 xblock-drag-and-drop-v2==5.1.0
 xblock-google-drive==0.8.2
 xblock-poll==1.16.1
-xblocks-contrib==0.17.0
+xblocks-contrib==1.0.5
 xmlsec==1.3.14
     # via python3-saml
 xss-utils==1.0.0

requirements/edx/development.txt

@@ -1560,7 +1560,7 @@ xblock==6.3.1
 xblock-drag-and-drop-v2==5.1.0
 xblock-google-drive==0.8.2
 xblock-poll==1.16.1
-xblocks-contrib==0.17.0
+xblocks-contrib==1.0.5
 xmlsec==1.3.14
     # via python3-saml
 xss-utils==1.0.0