Bump ijson dependency to 3.1 (#11438) (#11439)

Since e81fa926, Synapse depends on
the use_float flag which has been introduced in ijson 3.1 and
is not available in 3.0. This is known to cause runtime errors
with send_join.

Signed-off-by: Daniel Molkentin <danimo@infra.run>

Co-authored-by: Daniel Molkentin <danimo@infra.run>

changelog.d/11439.bugfix

+Fix a bug introduced in 1.47.0 where `send_join` could fail due to an outdated `ijson` version.

synapse/python_dependencies.py

@@ -86,7 +86,7 @@ REQUIREMENTS = [
     # We enforce that we have a `cryptography` version that bundles an `openssl`
     # with the latest security patches.
     "cryptography>=3.4.7",
-    "ijson>=3.0",
+    "ijson>=3.1",
 ]
 
 CONDITIONAL_REQUIREMENTS = {