[WIP] Fix security alerts

[rafaelmakaha]

Desription

This pull request resolves #69 by fixing dependabot security alerts

I've fixed few alerts by updating package-lock dependencies with a simple npm i, but some dependencies updates might break application as said in npm audit fix. That's why it is in WIP status

[ghost]

DeepCode's analysis on #a4dedc found:

• ℹ️ 4 minor issues. 👇
• ✔️ 4 issues were fixed.

Top issues

Description	Example fixes
Type declaration of 'any' loses type-safety. Consider replacing it with a more precise type. Occurrences: index.ts:6 index.ts:7 theme-menu.component.ts:21	🔧 Example fixes
Don't use 'String' as a type. Use 'string' instead. Occurrences: page.component.ts:18 page.component.ts:19	🔧 Example fixes
Identifier 'path' is never reassigned; use 'const' instead of 'let'. Occurrences: page.component.ts:24	🔧 Example fixes

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