chore(ci): add pnpm workspace for github actions (#52976)

This creates a monorepo for each github action and ensures they all use pnpm.

You can install and build all with the following:

```
cd .github
pnpm i
pnpm -r build
```

Author: styfle

.github/actions/issue-labeler/lib/index.js

@@ -4,7 +4,7 @@
   "type": "module",
   "exports": "./lib/index.js",
   "scripts": {
-    "build": "pnpm types && pnpm ncc -m -o ./lib build src/index.ts --license licenses.txt",
+    "build": "pnpm types && ncc -m -o ./lib build src/index.ts --license licenses.txt",
     "types": "tsc"
   },
   "dependencies": {
@@ -13,6 +13,7 @@
   },
   "devDependencies": {
     "@types/node": "^18.15.3",
-    "@vercel/ncc": "0.36.1"
+    "@vercel/ncc": "0.36.1",
+    "typescript": "5.1.6"
   }
 }

.github/actions/issue-labeler/package.json

@@ -5,7 +5,8 @@
     "build": "ncc -m -o . build src/index.mjs --license licenses.txt"
   },
   "devDependencies": {
-    "@vercel/ncc": "0.34.0"
+    "@vercel/ncc": "0.34.0",
+    "typescript": "5.1.6"
   },
   "dependencies": {
     "@actions/core": "1.10.0",

.github/actions/issue-validator/index.mjs

@@ -9,12 +9,12 @@
     "build": "ncc -m -o . build src/index.mjs --license licenses.txt"
   },
   "devDependencies": {
-    "@vercel/ncc": "0.34.0"
+    "@vercel/ncc": "0.34.0",
+    "typescript": "5.1.6"
   },
   "dependencies": {
     "@actions/core": "1.10.0",
     "@actions/github": "5.1.1",
     "@octokit/graphql": "7.0.1"
-  },
-  "packageManager": "[email protected]"
+  }
 }