Bump @angular/core in /tools/graph-tool/src/main/webapp

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 4.1.2 to 10.2.5.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/10.2.5/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/10.2.5/packages/core)

---
updated-dependencies:
- dependency-name: "@angular/core"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

tools/graph-tool/src/main/webapp/package.json

@@ -30,7 +30,7 @@
     "@angular/common": "^4.1.2",
     "@angular/compiler": "^4.1.2",
     "@angular/compiler-cli": "^4.1.2",
-    "@angular/core": "^4.1.2",
+    "@angular/core": "^10.2.5",
     "@angular/forms": "^4.1.2",
     "@angular/http": "^4.1.2",
     "@angular/language-service": "^4.1.2",

tools/graph-tool/src/main/webapp/yarn.lock

@@ -22,9 +22,11 @@
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/@angular/compiler/-/compiler-4.1.2.tgz#09542381162fd8dd962d84559498ce69a05071ea"
 
-"@angular/core@^4.1.2":
-  version "4.1.2"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-4.1.2.tgz#37b5c040b9dd37003499aea04319d699e3870596"
+"@angular/core@^10.2.5":
+  version "10.2.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-10.2.5.tgz#2050b0dbb180aa98c2ec46bba6d4827565ba2a2d"
+  dependencies:
+    tslib "^2.0.0"
 
 "@angular/forms@^4.1.2":
   version "4.1.2"
@@ -4105,10 +4107,6 @@ ng2-file-upload@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/ng2-file-upload/-/ng2-file-upload-1.2.1.tgz#5563c5dfd6f43fbfbe815c206e343464a0a6a197"
 
-ng2-slim-loading-bar@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/ng2-slim-loading-bar/-/ng2-slim-loading-bar-4.0.0.tgz#7256fdde7c058f14955a3ef2e65afafb5b664603"
-
 no-case@^2.2.0:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/no-case/-/no-case-2.3.1.tgz#7aeba1c73a52184265554b7dc03baf720df80081"
@@ -6078,6 +6076,10 @@ tsickle@^0.21.0:
     source-map "^0.5.6"
     source-map-support "^0.4.2"
 
+tslib@^2.0.0:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.6.2.tgz#703ac29425e7b37cd6fd456e92404d46d1f3e4ae"
+
 tslint-loader@^2.1.0:
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/tslint-loader/-/tslint-loader-2.1.5.tgz#77abdfd9bf13d7133a6efa4447a1690783c4bb49"