[Chore] Upgrade Go version to 1.25 (#334)

* update Go version to 1.25

* add changelog entry

Author: SBGoods

.changes/unreleased/NOTES-20260313-101138.yaml

@@ -0,0 +1,5 @@
+kind: NOTES
+body: This Go module has been updated to Go 1.25 per the [Go support policy](https://golang.org/doc/devel/release.html#policy). Any consumers building on earlier Go versions may experience errors.
+time: 2026-03-13T10:11:38.631957-04:00
+custom:
+    Issue: "334"

.github/workflows/ci-go.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [ '1.25', '1.24' ]
+        go-version: [ '1.25', '1.26' ]
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0

README.md

@@ -18,7 +18,7 @@ This Go module is typically kept up to date with the latest `terraform-plugin-fr
 
 This Go module follows `terraform-plugin-framework` Go compatibility.
 
-Currently that means Go **1.24** must be used when developing and testing code.
+Currently that means Go **1.25** must be used when developing and testing code.
 
 ## Contributing
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/hashicorp/terraform-plugin-framework-validators
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/google/go-cmp v0.7.0

tools/go.mod

@@ -1,6 +1,6 @@
 module tools
 
-go 1.24.0
+go 1.25.0
 
 require github.com/hashicorp/copywrite v0.25.1