Update Go (prometheus-community#1203)

* Update minimum supported Go to 1.24.0.
* Update Go build to 1.25.x.
* Update PostgreSQL testing versions.

Signed-off-by: SuperQ <[email protected]>

Author: SuperQ

.circleci/config.yml

@@ -8,7 +8,7 @@ executors:
   # This must match .promu.yml.
   golang:
     docker:
-    - image: cimg/go:1.24
+    - image: cimg/go:1.25
 
 jobs:
   test:
@@ -23,7 +23,7 @@ jobs:
 
   integration:
     docker:
-    - image: cimg/go:1.24
+    - image: cimg/go:1.25
     - image: << parameters.postgres_image >>
       environment:
         POSTGRES_DB: circle_test
@@ -73,13 +73,11 @@ workflows:
         matrix:
           parameters:
             postgres_image:
-            - circleci/postgres:11
-            - circleci/postgres:12
-            - circleci/postgres:13
-            - cimg/postgres:14.9
-            - cimg/postgres:15.4
-            - cimg/postgres:16.0
-            - cimg/postgres:17.0
+            - cimg/postgres:13.22
+            - cimg/postgres:14.19
+            - cimg/postgres:15.14
+            - cimg/postgres:16.10
+            - cimg/postgres:17.6
     - prometheus/build:
         name: build
         parallelism: 3

.promu.yml

@@ -1,6 +1,6 @@
 go:
     # This must match .circle/config.yml.
-    version: 1.24
+    version: 1.25
 repository:
     path: github.com/prometheus-community/postgres_exporter
 build:

README.md

@@ -7,7 +7,7 @@
 
 Prometheus exporter for PostgreSQL server metrics.
 
-CI Tested PostgreSQL versions: `11`, `12`, `13`, `14`, `15`, `16`, `17`.
+CI Tested PostgreSQL versions: `13`, `14`, `15`, `16`, `17`.
 
 ## Quick Start
 This package is available for Docker:

go.mod

@@ -2,8 +2,6 @@ module github.com/prometheus-community/postgres_exporter
 
 go 1.24.0
 
-toolchain go1.24.1
-
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2
 	github.com/alecthomas/kingpin/v2 v2.4.0