pw_config_loader: Add missing types dep

Change-Id: I22b853354ef41e1f59b43d4950e478d68a81e75c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/210236
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Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
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Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Reviewed-by: Ted Pudlik <tpudlik@google.com>
diff --git a/pw_config_loader/py/BUILD.bazel b/pw_config_loader/py/BUILD.bazel
index 96f9bd6..c86852b 100644
--- a/pw_config_loader/py/BUILD.bazel
+++ b/pw_config_loader/py/BUILD.bazel
@@ -29,6 +29,7 @@
     imports = ["."],
     deps = [
         "@python_packages_pyyaml//:pkg",
+        "@python_packages_types_pyyaml//:pkg",
     ],
 )
 
diff --git a/pw_config_loader/py/setup.cfg b/pw_config_loader/py/setup.cfg
index 7e8847d..66c2837 100644
--- a/pw_config_loader/py/setup.cfg
+++ b/pw_config_loader/py/setup.cfg
@@ -24,6 +24,7 @@
 install_requires =
     pyyaml
     toml
+    types-pyyaml
 
 [options.package_data]
 pw_config_loader =