Allow Audience field to be list of strings.

fastapi_oidc/types.py

@@ -33,7 +33,7 @@ class IDToken(BaseModel):
 
     iss: str
     sub: str
-    aud: str
+    aud: str | list[str]
     exp: int
     iat: int
 

tests/test_types.py

@@ -36,3 +36,13 @@ def test_IDToken_takes_arbitrary_extra_fields():
         iat=42,
         arbitrary_extra_field="Laskuil-Hliz",
     )
+
+
+def test_IDToken_takes_aud_list():
+    assert types.IDToken(
+        iss="ClearAirTurbulence",
+        sub="ValueJudgement",
+        aud=["SoberCounsel", "AnotherSoberCounsel"],
+        exp=3,
+        iat=42,
+    )