Keyroller: simplify package dependencies and remove pipfile

[romeroalx]

Short description

This PR tries to simplify the location of dependencies for this tool to only requirements.txt. Also updates setup.py to consider that the requirements file could include hashes (pip-compile output).

The reason for this PR is that dependabot found a couple of security issues for the packages pinned in Pipfile.lock that was initially generated for Python 3.7`. See #16605 and #15648.

A simple test to check that the package builds correctly:

docker run -ti python:3.11-slim-trixie bash
apt update && apt install git curl -y
cd
git clone --recursive https://github.com/romeroalx/pdns.git
cd pdns/pdns/keyroller/
git checkout keyroller-remove-pipfile
python -m venv venv
. venv/bin/activate
pip install .

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• 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 20066002400

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 65 unchanged lines in 9 files lost coverage.
• Overall coverage increased (+5.2%) to 73.328%

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Files with Coverage Reduction	New Missed Lines	%
pdns/recursordist/aggressive_nsec.cc	2	66.32%
pdns/recursordist/lwres.cc	2	65.82%
modules/gpgsqlbackend/spgsql.cc	3	68.42%
pdns/rcpgenerator.cc	3	90.87%
pdns/recursordist/recpacketcache.hh	3	89.55%
pdns/recursordist/syncres.cc	5	80.95%
pdns/recursordist/test-syncres_cc1.cc	7	90.26%
pdns/recursordist/rec-tcp.cc	14	69.45%
modules/godbcbackend/sodbc.cc	26	70.08%

Totals
Change from base Build 20064863395:	5.2%
Covered Lines:	128797
Relevant Lines:	164859

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💛 - Coveralls