pyproject: Tweak main deps.

Author: neiljp

pyproject.toml

@@ -28,16 +28,16 @@ requires-python = ">=3.7, <3.12"
 dynamic = ["version", "readme"]
 dependencies = [
     "urwid~=2.1.2",
-    "zulip>=0.8.2",
-    "urwid_readline>=0.13",
-    "beautifulsoup4>=4.11.1",
-    "lxml>=4.9.2",
-    "pygments>=2.14.0",
+    "zulip>=0.8.2,<0.9.0",  # Next release, 0.9.0, requires Python 3.9
+    "urwid_readline>=0.15.1",
+    "beautifulsoup4>=4.13.4",
+    "lxml==4.9.4",
+    "pygments>=2.17.2,<2.18.0",  # 2.18.0 will drop support for Python 3.7
     "typing_extensions~=4.5.0",
     "python-dateutil>=2.8.2",
-    "pytz>=2022.7.1",
-    "tzlocal>=2.1",
-    "pyperclip>=1.8.1",
+    "pytz>=2025",  # Can use native support from Python 3.9 onwards
+    "tzlocal>=5.0,<5.1",  # 5.1 will drop support for Python 3.7
+    "pyperclip>=1.9.0",
 ]
 
 [project.optional-dependencies]