Drop dependency on @actions/core

Author: felipecrs

index.js

@@ -1,15 +1,23 @@
 // @ts-check
 
-const core = require('@actions/core');
+const { env } = require("node:process");
+const { appendFileSync } = require("node:fs");
+
+function setGitHubActionsOutput(name, value) {
+  if (env.GITHUB_OUTPUT) {
+    const output = `${name}=${value}\n`;
+    appendFileSync(env.GITHUB_OUTPUT, output);
+  }
+}
 
 function verifyConditions() {
-  core.setOutput("new-release-published", "false");
+  setGitHubActionsOutput("new-release-published", "false");
 }
 
 function generateNotes(_pluginConfig, { nextRelease }) {
-  core.setOutput("new-release-published", "true");
-  core.setOutput("new-release-version", nextRelease.version);
-  core.setOutput("new-release-git-tag", nextRelease.gitTag);
+  setGitHubActionsOutput("new-release-published", "true");
+  setGitHubActionsOutput("new-release-version", nextRelease.version);
+  setGitHubActionsOutput("new-release-git-tag", nextRelease.gitTag);
 }
 
 module.exports = {

package-lock.json

@@ -28,9 +28,6 @@
       "@semantic-release/github"
     ]
   },
-  "dependencies": {
-    "@actions/core": "^1.10.0"
-  },
   "volta": {
     "node": "16.18.0",
     "npm": "8.19.2"