[Snyk] Fix for 2 vulnerabilities

[q1blue]

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

Snyk changed the following file(s):

• plugins/linguist-backend/package.json

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

⚠️ Warning

Failed to update the yarn.lock, please update manually before merging.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Regular Expression Denial of Service (ReDoS) SNYK-JS-AJV-15274295	157
	Allocation of Resources Without Limits or Throttling SNYK-JS-QS-15268416	62

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• Check the changes in this PR to ensure they won't cause issues with your project.
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---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)
🦉 Allocation of Resources Without Limits or Throttling

---

EntelligenceAI PR Summary

This PR transitions the linguist-backend plugin from workspace dependencies to explicit package versions and updates the express dependency.

• Replaced workspace protocol with version 0.24.1 for @backstage/backend-common
• Replaced workspace protocol with version 0.2.0 for @backstage/catalog-client
• Replaced workspace protocol with version 0.1.1 for @backstage/catalog-model
• Replaced workspace protocol with version 0.1.1 for @backstage/config
• Replaced workspace protocol with version 0.6.0 for @backstage/plugin-auth-node
• Upgraded express dependency from ^4.18.1 to ^4.22.0

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[snyk-io]

⛔ Snyk checks have failed. 1 issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (1)
⛔	Open Source Security	0	0	1	0	1 issues

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[entelligence-ai-pr-reviews]

Walkthrough

This PR updates the linguist-backend plugin's dependency management by transitioning from workspace protocol references to explicit version numbers for multiple Backstage packages. The changes affect six dependencies in total: five Backstage packages (@backstage/backend-common, @backstage/catalog-client, @backstage/catalog-model, @backstage/config, and @backstage/plugin-auth-node) are now pinned to specific versions, and the express package is upgraded from version 4.18.1 to 4.22.0. This modification indicates preparation for package publication or the establishment of explicit version constraints to ensure consistent dependency resolution across environments.

Changes

File(s)	Summary
plugins/linguist-backend/package.json	Converted five Backstage packages from workspace protocol to explicit versions: @backstage/backend-common (0.24.1), @backstage/catalog-client (0.2.0), @backstage/catalog-model (0.1.1), @backstage/config (0.1.1), and @backstage/plugin-auth-node (0.6.0); upgraded express from ^4.18.1 to ^4.22.0

Sequence Diagram

This diagram shows the interactions between components:

sequenceDiagram
    participant App as Application
    participant LB as Linguist Backend Plugin
    participant BC as Backend Common (v0.24.1)
    participant CC as Catalog Client (v0.2.0)
    participant CM as Catalog Model (v0.1.1)
    participant Auth as Auth Node (v0.6.0)
    participant Express as Express (v4.22.0)
    
    Note over LB: Dependency Version Updates
    
    App->>LB: Initialize Plugin
    activate LB
    
    LB->>BC: Import backend utilities
    LB->>CC: Import catalog client
    LB->>CM: Import catalog models
    LB->>Auth: Import auth utilities
    LB->>Express: Setup HTTP server
    
    Note over LB,Express: Updated from workspace<br/>to fixed versions
    
    LB-->>App: Plugin Ready
    deactivate LB

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