fix: define skip-unstable in opts so they are passed down to gitSemverTags

[bleuarg]

Option definition for skip-unstable are missing in cli.js both for git-semver-tags and conventional-recommended-bump. So when running from command line the --skip-unstable opt is not passed to the actual gitSemverTags method.

I could not manage to validate the issue with conventional-recommended-bump but since it is defined in the options object, I've added it to the meow definition there too for consistency.

Likely addresses #754 and #675.

Validation

Example when running in this very repo:

Before

$ node packages/git-semver-tags/cli.js
v1.1.0
v1.0.2
v1.0.1
v1.0.0
v0.5.3
v0.5.2
v0.5.1
v0.5.0
v0.4.3
v0.4.2
v0.4.1
v0.4.0
v0.3.2
v0.3.1
v0.3.0
v0.2.1
v0.2.0
v0.1.3
v0.1.2
v0.1.1
v0.1.0
v0.1.0-beta.3
v0.1.0-beta.2
v0.1.0-beta.1
v0.1.0-alpha.3
v0.1.0-alpha.2
v0.1.0-alpha.1
v0.0.17
v0.0.16
v0.0.15
v0.0.14
v0.0.13
v0.0.11
v0.0.10
v0.0.9
v0.0.8
v0.0.7
v0.0.6
v0.0.4

After

$ node packages/git-semver-tags/cli.js
v1.1.0
v1.0.2
v1.0.1
v1.0.0
v0.5.3
v0.5.2
v0.5.1
v0.5.0
v0.4.3
v0.4.2
v0.4.1
v0.4.0
v0.3.2
v0.3.1
v0.3.0
v0.2.1
v0.2.0
v0.1.3
v0.1.2
v0.1.1
v0.1.0
v0.0.17
v0.0.16
v0.0.15
v0.0.14
v0.0.13
v0.0.11
v0.0.10
v0.0.9
v0.0.8
v0.0.7
v0.0.6
v0.0.4

[dangreen]

Hi. Thank you for the PR. Please rebase to current master.

[bleuarg]

@dangreen Hi, thanks for the feedback, rebased and pushed 👍.

[coveralls]

coverage: 89.5%. remained the same when pulling b66f80b on bleuarg:fix/skip-unstable into 5e37788 on conventional-changelog:master.