make requirements more strict with modern versions

- Update Django to >=4.2.25,<6 (from ==4.2.25)
- Update stripe to >=12.3.0,<13 (from ==1.19.0, major upgrade)
- Update redis to >=4.4.4,<5 (from ==4.4.4)
- Update pydantic to >=1.10.13,<3 (from ==1.10.13)
- Update python-ulid to >=2.4.0,<3 (from >=2.4.0,<2.5)
- Update requests to >=2.32.4,<3 (from >=2.31.0)
- Update rollbar to >=0.15.1,<2 (from >=0.8.2)
- Add stricter version ranges with upper bounds for better dependency resolution

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: jontsai

requirements.txt

@@ -1,18 +1,18 @@
-Django==4.2.25
+Django>=4.2.25,<6
 Fabric==1.6.1
 South==0.8.4
-django-grappelli==2.15.2
+django-grappelli>=2.15.2
 emoji>=2.12.1,<3
 numpy==1.22.0
-pydantic==1.10.13
-pygeoip==0.2.6
-python-dateutil>=2.8.2,<3
-python-ulid[pydantic]>=2.4.0,<2.5
-redis==4.4.4
+pydantic>=1.10.13,<3
+pygeoip>=0.2.6,<1
+python-dateutil>=2.9.0,<3
+python-ulid[pydantic]>=2.4.0,<3
+redis>=4.4.4,<5
 reportlab==3.6.13
-requests-oauthlib>=1.0.0
-requests>=2.31.0
-rollbar>=0.8.2
-stripe==1.19.0
+requests-oauthlib>=1.3.0,<2
+requests>=2.32.4,<3
+rollbar>=0.15.1,<2
+stripe>=12.3.0,<13
 user-agents==2.2.0
 xhtml2pdf==0.2.17