Add Vulert Tool in README.md

[ankitdn]

User description

Add Vulert in Tool Section

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PR Type

documentation

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Description

• Added Vulert tool to the Vulnerabilities and Security Advisories section.

• Provided a brief description and link for Vulert.

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Changes walkthrough 📝

	Relevant files
Documentation	README.md Add Vulert tool entry to security advisories list                README.md Added Vulert to the list of vulnerability monitoring tools. Included a description highlighting Vulert's features and supported languages. +1/-0

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