Remove version pins for SQLA & Alembic

test-requirements.txt

@@ -1,19 +1,19 @@
-alembic==1.13.2
+alembic
     # via -r test-requirements.in
 asyncpg==0.28.0
     # via -r test-requirements.in
 attrs==23.1.0
     # via pytest
 futures==3.0.5
     # via -r test-requirements.in
-greenlet==2.0.2
+#greenlet==2.0.2
     # via sqlalchemy
 iniconfig==2.0.0
     # via pytest
-mako==1.2.4
+#mako==1.2.4
     # via alembic
-markupsafe==2.1.3
-    # via mako
+#markupsafe==2.1.3
+#    # via mako
 mock==5.1.0
     # via -r test-requirements.in
 more-itertools==10.0.0
@@ -30,13 +30,13 @@ py==1.11.0
     # via pytest
 pytest==7.1.3
     # via -r test-requirements.in
-sqlalchemy==2.0.31
+sqlalchemy
     # via
     #   -r test-requirements.in
     #   alembic
 tomli==2.0.1
     # via pytest
-typing-extensions==4.7.1
+#typing-extensions==4.7.1
     # via
     #   alembic
     #   psycopg