fix(deps): bump go to 1.26.4 to address stdlib CVEs (#931)

Resolves Snyk findings:
- SNYK-GOLANG-STDCRYPTOX509-17135840
- SNYK-GOLANG-STDMIME-17135844
- SNYK-GOLANG-STDNETTEXTPROTO-17135843

Author: dangrondahl

go.mod

@@ -1,6 +1,6 @@
 module github.com/kosli-dev/cli
 
-go 1.26.3
+go 1.26.4
 
 require (
 	cloud.google.com/go/run v1.21.0