[Snyk] Security upgrade @backstage/theme from 0.0.0-use.local to 0.1.1

[snyk-io]

Snyk has created this PR to fix 3 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• plugins/splunk-on-call/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
	Cross-site Scripting (XSS) SNYK-JS-REMIXRUNROUTER-14908530	560
	Open Redirect SNYK-JS-REACTROUTER-14908286	555
	Open Redirect SNYK-JS-REMIXRUNROUTER-14908287	555

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• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

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

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[entelligence-ai-pr-reviews]

Sequence Diagram

This diagram shows the interactions between components:

sequenceDiagram
    participant Dev as Developer
    participant PM as Package Manager
    participant WS as Workspace
    participant NPM as NPM Registry
    participant Plugin as Splunk-on-Call Plugin

    Note over Dev,Plugin: Dependency Resolution Change

    Dev->>PM: Install dependencies for splunk-on-call plugin
    
    alt Before Change (workspace:^)
        PM->>WS: Resolve @backstage/theme from workspace
        WS-->>PM: Return local workspace version
        PM->>Plugin: Link workspace theme package
    else After Change (0.1.1)
        PM->>NPM: Fetch @backstage/theme@0.1.1
        NPM-->>PM: Return published version 0.1.1
        PM->>Plugin: Install pinned theme version
    end
    
    Note over Plugin: Plugin now uses fixed theme version<br/>instead of workspace reference

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[entelligence-ai-pr-reviews]

Correctness: Line 6: Pinning @backstage/theme to 0.1.1 breaks monorepo resolution—all other deps use workspace:^. Revert to "@backstage/theme": "workspace:^".

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File: plugins/splunk-on-call/package.json, Line 40

Problem: The dependency `@backstage/theme` has been changed from `workspace:^` to a pinned version `0.1.1`, breaking the monorepo workspace protocol used by all other Backstage dependencies in this file.

Fix Instructions:
1. Revert the change to use the workspace protocol
2. Change `"@backstage/theme": "0.1.1"` back to `"@backstage/theme": "workspace:^"`
3. This ensures consistency with other Backstage dependencies (@backstage/catalog-model, @backstage/core-components, @backstage/core-plugin-api, @backstage/plugin-catalog-react) which all use `workspace:^`
4. The workspace protocol ensures the local monorepo version is used during development and properly resolved during publishing

✨ Committable Code Suggestion

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Suggested change

	"@backstage/core-components": "workspace:^",
	"@backstage/core-plugin-api": "workspace:^",
	"@backstage/plugin-catalog-react": "workspace:^",
	"@backstage/theme": "workspace:^",
	"@backstage/theme": "0.1.1",
	"@material-ui/core": "^4.12.2",
	"@material-ui/icons": "^4.9.1",
	"@material-ui/lab": "4.0.0-alpha.61",
	"@backstage/catalog-model": "workspace:^",
	"@backstage/core-components": "workspace:^",
	"@backstage/core-plugin-api": "workspace:^",
	"@backstage/plugin-catalog-react": "workspace:^",
	"@backstage/theme": "workspace:^",
	"@material-ui/core": "^4.12.2",
	"@material-ui/icons": "^4.9.1",
	"@material-ui/lab": "4.0.0-alpha.61",