Update supported gssapi to version 1.7.3

Author: nmariz

docs/mysqlx/requirements.rst

@@ -8,4 +8,4 @@ Requirements
 * dnspython (version >= 1.16.0, <= 2.1.0) for DNS SRV support
 * lz4 (version >= 2.1.6, <= 3.1.3) for connection compression support
 * zstandard (version >= 0.12.0, <= 0.15.2) for connection compression support
-* gssapi (version gssapi==1.6.9) for Kerberos and LDAP SASL authentication support
+* gssapi (version gssapi >= 1.6.9, <= 1.7.3) for Kerberos and LDAP SASL authentication support

setup.py

@@ -142,6 +142,6 @@
     extras_require={
         "dns-srv": ["dnspython>=1.16.0,<=2.1.0"],
         "compression": ["lz4>=2.1.6,<=3.1.3", "zstandard>=0.12.0,<=0.15.2"],
-        "gssapi": ["gssapi==1.6.9"],
+        "gssapi": ["gssapi>=1.6.9,<=1.7.3"],
     },
 )