chore: Bump the charts minor versions to leave room for patch updates in the release-1.7 branch

[rm3l]

Description of the change

Otherwise, a chart version in release-1.7 might conflict with the same chart version in main.

Which issue(s) does this PR fix or relate to

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How to test changes / Special notes to the reviewer

Checklist

• For each Chart updated, version bumped in the corresponding Chart.yaml according to Semantic Versioning.
• For each Chart updated, variables are documented in the values.yaml and added to the corresponding README.md. The pre-commit utility can be used to generate the necessary content. Use pre-commit run -a to apply changes. The pre-commit Workflow will do this automatically for you if needed.
• JSON Schema template updated and re-generated the raw schema via the pre-commit hook.
• Tests pass using the Chart Testing tool and the ct lint command.
• If you updated the orchestrator-infra chart, make sure the versions of the Knative CRDs are aligned with the versions of the CRDs installed by the OpenShift Serverless operators declared in the values.yaml file. See Installing Knative Eventing and Knative Serving CRDs for more details.

Summary by Sourcery

Bump minor versions of Helm charts in the release-1.7 branch to avoid version conflicts with the main branch and reserve space for future patch releases

Build:

• Increment Backstage chart version from 4.4.1 to 4.5.0
• Increment Orchestrator Infra chart version from 0.1.0 to 0.2.0
• Increment Orchestrator Software Templates Infra chart version from 0.1.0 to 0.2.0

Documentation:

• Update README badges to reflect the new chart versions

[sourcery-ai]

Reviewer's Guide

This PR increments the minor versions of three Helm charts in the release-1.7 branch by updating the version field in Chart.yaml and synchronizing the version badges in README.md to avoid conflicts with the main branch, ensuring future patch releases remain unblocked.

File-Level Changes

Change	Details	Files
Backstage chart minor version bumped	Incremented version in Chart.yaml from 4.4.1 to 4.5.0 Updated version badge in README.md to 4.5.0	charts/backstage/Chart.yaml charts/backstage/README.md
Orchestrator Infra chart minor version bumped	Incremented version in Chart.yaml from 0.1.0 to 0.2.0 Updated version badge in README.md to 0.2.0	charts/orchestrator-infra/Chart.yaml charts/orchestrator-infra/README.md
Orchestrator Software Templates Infra chart minor version bumped	Incremented version in Chart.yaml from 0.1.0 to 0.2.0 Updated version badge in README.md to 0.2.0	charts/orchestrator-software-templates-infra/Chart.yaml charts/orchestrator-software-templates-infra/README.md

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sourcery-ai]

Hey @rm3l - I've reviewed your changes and they look great!

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