[version bump] Upgrade @actions/github, @actions/core and axios to resolve undici and axios advisories

dist/main/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

dist/post/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

jest.config.cjs

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+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  clearMocks: true,
+  moduleFileExtensions: ["js", "ts"],
+  testEnvironment: "node",
+  // `@actions/github@9` exposes some entry points (e.g. `./lib/utils`) only
+  // under the ESM `import` condition, so enable it for Jest's resolver.
+  testEnvironmentOptions: {
+    customExportConditions: ["node", "import"],
+  },
+  testMatch: ["**/*.test.ts"],
+  testRunner: "jest-circus/runner",
+  extensionsToTreatAsEsm: [".ts"],
+  moduleNameMapper: {
+    // enabling the `import` condition makes `dedent` (a CJS dep of jest-circus)
+    // resolve to its `.mjs`; pin it to its CommonJS build.
+    "^dedent$": "<rootDir>/node_modules/dedent/dist/dedent.js",
+    // same for eventemitter3 (a CJS dep of @slack/web-api).
+    "^eventemitter3$": "<rootDir>/node_modules/eventemitter3/index.js",
+    // allow NodeNext-style `./foo.js` specifiers to resolve to `./foo.ts`
+    "^(\\.{1,2}/.*)\\.js$": "$1",
+  },
+  transform: {
+    "^.+\\.ts$": ["ts-jest", { useESM: true, diagnostics: { ignoreCodes: [151002] } }],
+  },
+  verbose: true,
+};