chore(deps): update dependency go to v1.23.5 (#150)

| datasource     | package | from   | to     |
| -------------- | ------- | ------ | ------ |
| golang-version | go      | 1.23.4 | 1.23.5 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/cloudnative-pg/cnpg-i
 
 go 1.22.7
 
-toolchain go1.23.4
+toolchain go1.23.5
 
 require (
 	google.golang.org/grpc v1.69.4