bumped version of 'yeoman-generator' to ^7.0.0

* had to upgrade the dependency of 'yeoman-test' already to '^8.0.0' because of a problematic dependency in '^7.0.0' ([email protected]...', has been by '[email protected]...')
* had to add an explicit dependency to '[email protected]', as that one is only referenced as peer-dependency by all up-to-date versions of using packages - which are not installed by yarn (in contrast to npm) -, but it's required at runtime; filed a request on Github to add '[email protected]' as a prod dependency to 'yeoman-generator': yeoman/generator#1495

Signed-off-by: Christian Schneider <[email protected]>

Author: sailingKieler

package.json

@@ -23,7 +23,8 @@
   "dependencies": {
     "request": "^2.88.2",
     "tar": "^6.1.1",
-    "yeoman-generator": "^6.0.0"
+    "mem-fs": "^4.0.0",
+    "yeoman-generator": "^7.0.0"
   },
   "devDependencies": {
     "@types/request": "^2.48.0",
@@ -33,7 +34,7 @@
     "rimraf": "^3.0.0",
     "typescript": "~4.7.0",
     "yeoman-assert": "^3.1.1",
-    "yeoman-test": "^6.0.0"
+    "yeoman-test": "^8.0.0"
   },
   "files": [
     "generators",