feat(Dependencies): Update dependency ruamel.yaml to v0.18.12

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ruamel.yaml	==0.18.11 -> ==0.18.12

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[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
simple_vm_client
VirtualMachineHandler.py	209	20	20	90%
__init__.py	1	0	100%
test_virtualmachinehandler.py	309	0	100%
simple_vm_client/benchmark
__init__.py	0	0	100%
test_service.py	52	36	36	31%
simple_vm_client/bibigrid_connector
__init__.py	0	0	100%
bibigrid_connector.py	120	34	34	72%
test_bibigrid_connector.py	118	0	100%
simple_vm_client/forc_connector
__init__.py	0	0	100%
forc_connector.py	290	26	26	91%
simple_vm_client/forc_connector/playbook
__init__.py	0	0	100%
playbook.py	190	0	100%
test_playbook.py	381	0	100%
simple_vm_client/forc_connector/template
__init__.py	0	0	100%
template.py	227	14	14	94%
simple_vm_client/metadata_connector
metadata_connector.py	88	71	71	19%
simple_vm_client/openstack_connector
__init__.py	0	0	100%
openstack_connector.py	974	151	151	84%
test_openstack_connector.py	1248	2	2	99%
simple_vm_client/util
__init__.py	0	0	100%
state_enums.py	70	0	100%
test_thrift_converter.py	170	0	100%
thrift_converter.py	80	14	14	82%
TOTAL	4527	368	92%

Tests	Skipped	Failures	Errors	Time
303	0 💤	0 ❌	0 🔥	5.365s ⏱️