feat(*): Upgrade to Angular 15 (#255)

- Upgrade to Angular 15
- Upgrade dependencies and configs

BREAKING CHANGE: The upgrade to Angular 15 breaks compatibility with Angular 14.

---------

Co-authored-by: Zsolt Ilonczai <zsolt.ilonczai@dmgmori-heitec.hu>
Co-authored-by: Dominique Müller <dominique.m.mueller@gmail.com>

Author: 3 people

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Setup NodeJS
       uses: actions/setup-node@v2
       with:
-        node-version: 14.15.x
+        node-version: 16.20.x
     - name: Install dependencies
       run: npm ci
     - name: Build library
@@ -34,7 +34,7 @@ jobs:
     - name: Setup NodeJS
       uses: actions/setup-node@v2
       with:
-        node-version: 14.15.x
+        node-version: 16.20.x
     - name: Install dependencies
       run: npm ci
     - name: Lint library
@@ -50,7 +50,7 @@ jobs:
     - name: Setup NodeJS
       uses: actions/setup-node@v2
       with:
-        node-version: 14.15.x
+        node-version: 16.20.x
     - name: Install dependencies
       run: npm ci
     - name: Test library

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Setup NodeJS
       uses: actions/setup-node@v2
       with:
-        node-version: 14.15.x
+        node-version: 16.20.x
         registry-url: 'https://registry.npmjs.org'
     - name: Install dependencies
       run: npm ci

angular.json

@@ -85,6 +85,5 @@
         }
       }
     }
-  },
-  "defaultProject": "angular-notifier"
+  }
 }