chore(deps): pin dependencies

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
babel	pin	>= 2.3.4, < 2.4.0 -> ==2.3.4
colorlog	pin	>= 2.6.1, < 3.0.0 -> ==2.10.0
gcloud	pin	>= 0.15.0 -> ==0.18.3
github3.py	pin	>= 0.9.6 -> ==1.3.0
google-api-python-client	pin	>= 1.6.2 -> ==1.7.10
kazoo	pin	>= 2.2.1 -> ==2.6.1
mock	pin	>=1.3.0 -> ==3.0.5
msgpack-python	pin	>= 0.4.1, < 0.5.0 -> ==0.4.8
networkx	pin	== 1.11.0 -> ==1.11
networkx	pin	==1.11.0 -> ==1.11
oslo.utils	pin	>= 3.4.0 -> ==3.41.0
protobuf	pin	>= 3.6.0 -> ==3.9.0
protobuf3-to-dict	pin	== 0.1.5 -> ==0.1.5
protoc-java-resource-names-plugin	pin	>= 0.0.15 -> ==0.0.15
pyfakefs	pin	>=2.7,<3.0.0 -> ==2.9
pypandoc	pin	>= 1.4.0 -> ==1.4
pytest	pin	>=2.8.3 -> ==5.0.1
pytest-cov	pin	>=1.8.1 -> ==2.7.1
pytest-timeout	pin	>=1.0.0 -> ==1.3.3
requests (changelog)	pin	>= 2.10.0, < 3.0.0 -> ==2.22.0
ruamel.yaml	pin	>= 0.14.5 -> ==0.16.0
six	pin	>= 1.10.0 -> ==1.12.0
stringcase	pin	>= 1.2.0 -> ==1.2.0
taskflow	pin	== 1.25.0 -> ==1.25.0
unittest2	pin	>=1.1.0 -> ==1.1.0

📌 Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges your config if you instead don't wish to pin dependencies.

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