ci,mod: update to go1.23

kortschak · kortschak · commit 4cb1c6f4a863 · 2024-08-16T15:44:07.000+09:30
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       matrix:
         # Do not move this line; it is referred to by README.md.
         # Versions of Go that are explicitly supported by Gonum.
-        go-version: [1.22.x, 1.21.x]
+        go-version: [1.23.x, 1.22.x]
         platform: [ubuntu-latest, macos-latest]
         force-goarch: ["", "386"]
         tags: 
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
@@ -13,7 +13,7 @@ jobs:
     if: github.event.pull_request.merged == true
     strategy:
       matrix:
-        go-version: [1.22.x]
+        go-version: [1.23.x]
         platform: [ubuntu-latest]
         tags: 
           - ""
diff --git a/.github/workflows/staticcheck.yml b/.github/workflows/staticcheck.yml
@@ -8,7 +8,7 @@ jobs:
     name: lint
     strategy:
       matrix:
-        go: ["1.21.x"]
+        go: ["1.22.x"]
     runs-on: ubuntu-latest
     env:
       GO111MODULE: on
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module gonum.org/v1/gonum
 
-go 1.21
+go 1.22
 
 require (
 	github.com/goccmack/gocc v0.0.0-20230228185258-2292f9e40198
