Add explicit dependency on PyJWT

This is currently a transitive dependency that you're getting via `singer-sdk`. This will become an optional dependency with meltano/sdk#2525.

This package is on an older version (0.4.1), but it's still a good idea to not import any transitive dependencies and future-proof your package.

Let me know if you have any questions :)

pyproject.toml

@@ -12,6 +12,7 @@ license = "Apache-2.0"
 
 [tool.poetry.dependencies]
 python = ">=3.7,<3.11"
+PyJWT = "~=2.8.0"
 singer-sdk = { version="=0.4.1" }
 fs-s3fs = { version = "~=1.1.1", optional = true }
 requests = "~=2.31.0"