Specify minor go version in .mod file

See also golang/go#66175

Otherwise can't build:
  go: download go1.22 for linux/amd64: toolchain not available

Signed-off-by: Oleg Vasilev <oleg@neon.tech>

go.mod

@@ -1,6 +1,6 @@
 module github.com/neondatabase/autoscaling
 
-go 1.22
+go 1.22.0
 
 replace (
 	github.com/google/gnostic => github.com/google/gnostic v0.7.0