feat: update default Go version to 1.25 (#202)

chore: Update default go version to 1.25 and document versions input

Author: academo

build-plugin/README.md

@@ -135,12 +135,27 @@ If your target branch is protected, the default github.token cannot push changes
 ```
 <!-- x-release-please-end-version -->
 
+## Using a specific Go version
+
+If your plugin requires a different Go version than the default, you can specify it using the `go-version` input:
+<!-- x-release-please-start-version -->
+
+```yaml
+- uses: grafana/plugin-actions/build-plugin@build-plugin/v1.0.2
+  with:
+    policy_token: ${{ secrets.GRAFANA_ACCESS_POLICY_TOKEN }}
+    go-version: '1.23'
+```
+<!-- x-release-please-end-version -->
+
 ## Options
 
 - `policy_token`: Grafana access policy token. https://grafana.com/developers/plugin-tools/publish-a-plugin/sign-a-plugin#generate-an-access-policy-token
 - `grafana_token`: [deprecated] Grafana API Key to sign a plugin. Prefer `policy_token`. See https://grafana.com/developers/plugin-tools/publish-a-plugin/sign-a-plugin
-- attestation: If `true`, create a verifiable attestation for the plugin using sigstore. See [attestation of plugin package](#attestation-of-plugin-package)
-- use_changelog_generator: If `true`, generate a changelog for the plugin and commit it to the repository. See [changelog generation](#changelog-generation)
+- `go-version`: (Optional) Go version to use for building backend plugins. Defaults to "1.25". Example: `go-version: '1.23'`
+- `node-version`: (Optional) Node.js version to use. Defaults to "20".
+- `attestation`: If `true`, create a verifiable attestation for the plugin using sigstore. See [attestation of plugin package](#attestation-of-plugin-package)
+- `use_changelog_generator`: If `true`, generate a changelog for the plugin and commit it to the repository. See [changelog generation](#changelog-generation)
 
 ## Troubleshooting
 

build-plugin/action.yml

@@ -25,7 +25,7 @@ inputs:
   go-version:
     description: "Version of go"
     required: false
-    default: "1.21"
+    default: "1.25"
   node-version:
     description: "Version of node"
     required: false

package-plugin/README.md

@@ -64,3 +64,5 @@ jobs:
 ## Options
 
 - `policy_token`: Grafana access policy token. https://grafana.com/developers/plugin-tools/publish-a-plugin/sign-a-plugin#generate-an-access-policy-token
+- `go-version`: (Optional) Go version to use for building backend plugins. Defaults to "1.25".
+- `node-version`: (Optional) Node.js version to use. Defaults to "20".

package-plugin/action.yml

@@ -23,7 +23,7 @@ inputs:
   go-version:
     description: "Version of go"
     required: false
-    default: "1.21"
+    default: "1.25"
   node-version:
     description: "Version of node"
     required: false