Adding IQY Scanner

[phutelmyer]

Describe the change
This PR introduces a new scanner ScanIqy to target and extract network addresses from IQY (Internet Query) files which are used by Microsoft Excel. This scanner was developed as IQY files have been used to contact suspicious domains to download content. The following has been added to Strelka:

• ScanIqy scanner, which attempts to extract URLs within IQY files.
• test_scan_iqy, which is used to validate the IQY and Strelka IOC pipeline.
• A generic IQY signature taste to identify IQY files

In addition, bug fixes were implemented in this PR to fix preexisting issues with:

• poetry failed to install dependencies (unknown reason)
• ScanPcap tests failed to verify (zeek update)

Describe testing procedures

============================= test session starts ==============================
collecting ... collected 1 item

test_scan_iqy.py::test_scan_iqy 

============================== 1 passed in 4.53s ===============================
PASSED                                   [100%]
Process finished with exit code 0

Sample output
ScanIqy output will look like the following:

{
        "elapsed": mock.ANY,
        "flags": [],
        "address_found": True,
        "iocs": [
            {
                "description": "",
                "ioc": "github.com",
                "ioc_type": "domain",
                "scanner": "ScanIqy",
            },
            {
                "description": "",
                "ioc": "https://github.com/target/strelka/blob/master/docs/index.html",
                "ioc_type": "url",
                "scanner": "ScanIqy",
            },
        ],
    }

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of and tested my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings