Remove nonproduction dependencies flagged as security vulnerabilities

jimp: via ygo-data, feature unused
coveralls: via our test harness, abandoned, to be replaced by maintained options

Approach based on yarnpkg/yarn#4611

.github/workflows/node.js.yml

@@ -38,8 +38,4 @@ jobs:
           CHALLONGE_TOKEN: ${{ secrets.CHALLONGE_TOKEN }},
           POSTGRESQL_URL: postgresql://localhost/nonexistent
       - run: yarn cover
-      - name: Coveralls
-        uses: coverallsapp/github-action@master
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
       - run: yarn lint

package.json

@@ -28,7 +28,7 @@
 	},
 	"dependencies": {
 		"@fast-csv/format": "^4.3.5",
-		"async-mutex": "^0.3.2",
+		"async-mutex": "^0.4.0",
 		"debug": "^4.3.4",
 		"discord.js": "^14.12.0",
 		"dotenv": "^16.3.1",
@@ -51,7 +51,9 @@
 		"testcontainers": "^9.12.0"
 	},
 	"resolutions": {
-		"@types/node": "^18.15.11"
+		"@types/node": "^18.17.1",
+		"coveralls": "link:.vscode",
+		"jimp": "link:.vscode"
 	},
 	"eslintConfig": {
 		"extends": "@alphakretin"