Update html5-pugin to 1.4.9

[micellius]

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Description of the Change

This is a minor update that includes multiple bug fixes and better handling of edge cases.

Why Is This PR Valuable?

With this PR users would gain convenient way of installing/updating the latest version of CF CLI plugin.

Applicable Issues

• List command deletes application service binding SAP/cf-html5-apps-repo-cli-plugin#64
• Support CF custom certificates SAP/cf-html5-apps-repo-cli-plugin#65
• html5-list never completes _ Possible regression in 1.4.7 with cf api V3 support SAP/cf-html5-apps-repo-cli-plugin#66

How Urgent Is The Change?

The change is not time-sensitive and may be handled with medium priority.

Other Relevant Parties

The change is backward-compatible and other parties should not be affected.