Update integration_tests/bcr to match API changes and add missing deps

Author: rickeylev

sphinxdocs/integration_tests/bcr/BUILD.bazel

@@ -15,3 +15,10 @@ sphinx_build_binary(
         "@dev_pip//sphinx",
     ],
 )
+
+load("@bazel_skylib//rules:build_test.bzl", "build_test")
+
+build_test(
+    name = "docs_build_test",
+    targets = [":docs"],
+)

sphinxdocs/integration_tests/bcr/MODULE.bazel

@@ -14,3 +14,15 @@ local_path_override(
     module_name = "rules_python",
     path = "../../..",
 )
+dev_pip = use_extension(
+    "@rules_python//python/extensions:pip.bzl",
+    "pip",
+    dev_dependency = True,
+)
+dev_pip.parse(
+    hub_name = "dev_pip",
+    python_version = "3.11",
+    requirements_lock = "@rules_python//docs:requirements.txt",
+)
+use_repo(dev_pip, "dev_pip")
+bazel_dep(name = "bazel_skylib", version = "1.8.2")