Add "json" coverage reporter (#124)

### Description

Add `json` coverage reporter

---

Closes #123

.github/workflows/unit-tests.yml

@@ -13,6 +13,7 @@ on: # yamllint disable-line rule:truthy
   push:
     branches:
       - main
+  workflow_dispatch: {}
 
 jobs:
   jest:

.gitignore

@@ -9,3 +9,6 @@ yarn-error.log
 !.yarn/releases
 !.yarn/sdks
 !.yarn/versions
+
+# jest
+jest-report.json

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "build": "ncc build -m src/index.ts",
     "lint": "biome lint --write src",
-    "test": "jest --config=jest.config.json --coverage"
+    "test": "jest --config=jest.config.json --json --outputFile=jest-report.json --coverage"
   },
   "repository": {
     "type": "git",
@@ -28,7 +28,7 @@
   "dependencies": {
     "@actions/core": "1.11.1",
     "@actions/github": "6.0.0",
-    "twilio": "5.4.0"
+    "twilio": "5.4.2"
   },
   "devDependencies": {
     "@biomejs/biome": "1.9.4",

yarn.lock

@@ -3996,14 +3996,14 @@ __metadata:
     jest: "npm:29.7.0"
     jest-circus: "npm:29.7.0"
     ts-jest: "npm:29.2.5"
-    twilio: "npm:5.4.0"
+    twilio: "npm:5.4.2"
     typescript: "npm:5.7.3"
   languageName: unknown
   linkType: soft
 
-"twilio@npm:5.4.0":
-  version: 5.4.0
-  resolution: "twilio@npm:5.4.0"
+"twilio@npm:5.4.2":
+  version: 5.4.2
+  resolution: "twilio@npm:5.4.2"
   dependencies:
     axios: "npm:^1.7.4"
     dayjs: "npm:^1.11.9"
@@ -4012,7 +4012,7 @@ __metadata:
     qs: "npm:^6.9.4"
     scmp: "npm:^2.1.0"
     xmlbuilder: "npm:^13.0.2"
-  checksum: 10/bb51a61dca5946de108cbea4cf0b85a5e311a8dd825e4396298a979362391ab7dbcab04fd5faee1c909649f7f22bdd4828554c0ec53454099937a678fbf97305
+  checksum: 10/6f0a8f4629ad85721e5698b3314f146a1d168daf4026353388622e3ab67ba6ef71ff9107590f32c666a82c654ead213e2de45e5dfce92bec590b813676fc4cae
   languageName: node
   linkType: hard