Remove boto3 and pyyaml

They were previously used by a script involved in deployment of
the application and can now be safely removed.

Author: mikejamesthompson

pyproject.toml

@@ -21,8 +21,6 @@ dev = [
     "pytest>=8.4.1",
     "coverage>=7.10.6",
     "coverage-badge>=1.1.2",
-    "boto3==1.40.64",
-    "pyyaml>=6.0.2",
     "pyright>=1.1.405",
     "beautifulsoup4>=4.14.2",
 ]