tally: update to v0.18.6

Author: tinovyatkin

.gitmodules

@@ -4273,3 +4273,6 @@
 [submodule "extensions/zwirn"]
 	path = extensions/zwirn
 	url = https://codeberg.org/polymorphicengine/zwirn-zed-extension.git
+[submodule "extensions/tally"]
+	path = extensions/tally
+	url = https://github.com/wharflab/tally.git

extensions.toml

@@ -4322,3 +4322,8 @@ version = "0.0.1"
 [zwirn]
 submodule = "extensions/zwirn"
 version = "0.2.0"
+
+[tally]
+submodule = "extensions/tally"
+path = "_integrations/zed-tally"
+version = "0.18.6"