ci: add yaml stubs for mypy

Author: vishnugovind10

.github/workflows/ci.yml

@@ -7,6 +7,7 @@ on:
 jobs:
   python-test:
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
         python-version: ["3.11", "3.12"]
@@ -28,6 +29,7 @@ jobs:
 
   rust-test:
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}

pyproject.toml

@@ -14,7 +14,7 @@ dependencies = ["cryptography>=42.0.0", "PyYAML>=6.0.0"]
 keywords = ["ai-agents", "agent-security", "mcp", "merkle-tree", "audit-log"]
 
 [project.optional-dependencies]
-dev = ["pytest>=8.0.0", "pytest-cov>=5.0.0", "ruff>=0.5.0", "black>=24.0.0", "mypy>=1.10.0", "hypothesis>=6.0.0", "cffconvert>=2.0.0"]
+dev = ["pytest>=8.0.0", "pytest-cov>=5.0.0", "ruff>=0.5.0", "black>=24.0.0", "mypy>=1.10.0", "hypothesis>=6.0.0", "cffconvert>=2.0.0", "types-PyYAML>=6.0.12"]
 moltrust = ["moltrust>=0.2.0"]
 
 [project.scripts]