[Snyk] Security upgrade alpine from 3.21.2 to 3.21.3

[snyk-io]

Snyk has created this PR to fix 2 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• range2cidr/Dockerfile

We recommend upgrading to alpine:3.21.3, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	CVE-2024-13176 SNYK-ALPINE321-OPENSSL-8690014	54
	CVE-2024-13176 SNYK-ALPINE321-OPENSSL-8690014	54
	CVE-2024-12797 SNYK-ALPINE321-OPENSSL-8710358	54
	CVE-2024-12797 SNYK-ALPINE321-OPENSSL-8710358	54

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Summary by Sourcery

Bug Fixes:

• Upgrades the base image to alpine:3.21.3 to address multiple low severity vulnerabilities.

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[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request upgrades the alpine base image in the Dockerfile from version 3.21.2 to 3.21.3 to address multiple security vulnerabilities.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
The base image for the Dockerfile has been updated to address security vulnerabilities.	The alpine base image version was updated from 3.21.2 to 3.21.3.	range2cidr/Dockerfile

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[sourcery-ai]

We have skipped reviewing this pull request. Here's why:

• It seems to have been created by a bot (hey, snyk-io[bot]!). We assume it knows what it's doing!
• It seems to have been created by a bot ('[Snyk]' found in title). We assume it knows what it's doing!
• We don't review packaging changes - Let us know if you'd like us to change this.