GH Actions: force CI failure if there are binaries present in a Pull Request

[romeroalx]

Short description

Force CI failure if there are binaries present in a Pull Request.

The original request comes from this pull request

This is an example of a failure in the CodeQL workflow when a binary file is added to a PR: here

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)
• checked that this code was merged to master

[coveralls]

Pull Request Test Coverage Report for Build 7183689724

Warning: This coverage report may be inaccurate.

We've detected an issue with your CI configuration that might affect the accuracy of this pull request's coverage report.
To ensure accuracy in future PRs, please see these guidelines.
A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 42 unchanged lines in 9 files lost coverage.
• Overall coverage decreased (-0.001%) to 57.674%

---

Files with Coverage Reduction	New Missed Lines	%
pdns/backends/gsql/gsqlbackend.hh	2	97.71%
pdns/dnsdistdist/dnsdist-backend.cc	2	74.15%
pdns/misc.hh	3	82.52%
pdns/rcpgenerator.cc	3	89.68%
pdns/recursordist/test-syncres_cc2.cc	3	88.99%
pdns/tsigverifier.cc	3	77.22%
pdns/dnsdist.cc	4	71.42%
pdns/signingpipe.cc	5	85.48%
modules/godbcbackend/sodbc.cc	17	70.8%

Totals
Change from base Build 7183281949:	-0.001%
Covered Lines:	107468
Relevant Lines:	155015

---

💛 - Coveralls

[rgacogne]

Looks good, nice work!