Bump .tool-versions to use Go 1.18.6

stanhu · stanhu · commit ac86c796b611 · 2022-09-26T22:05:30.000-07:00
go 1.17 is no longer receiving security updates. Update to go 1.18 in preparation for upgrading. Part of https://gitlab.com/groups/gitlab-org/-/epics/8843
diff --git a/.tool-versions b/.tool-versions
@@ -1,2 +1,2 @@
 ruby 2.7.5
-golang 1.17.9
+golang 1.18.6

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`	`1`	`ruby 2.7.5`
`2`		`-golang 1.17.9`
	`2`	`+golang 1.18.6`