[Snyk] Security upgrade webob from 1.4.1 to 1.8.8

[kroman0]

Snyk has created this PR to fix 1 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• requirements.txt

⚠️ Warning

python-coveralls 2.5.0 requires sh, which is not installed.
python-coveralls 2.5.0 requires coverage, which is not installed.
pyramid 1.5.7 requires zope.interface, which is not installed.
pyramid 1.5.7 requires zope.deprecation, which is not installed.
pyramid 1.5.7 requires repoze.lru, which is not installed.
pyramid 1.5.7 requires venusian, which is not installed.
Jinja2 2.7.3 requires markupsafe, which is not installed.

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• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.
• Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the affected dependencies could be upgraded.

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🦉 URL Redirection to Untrusted Site ('Open Redirect')

[//]: # 'snyk:metadata:{"customTemplate":{"variablesUsed":[],"fieldsUsed":[]},"dependencies":[{"name":"webob","from":"1.4.1","to":"1.8.8"}],"env":"prod","issuesToFix":[{"exploit_maturity":"No Known Exploit","id":"SNYK-PYTHON-WEBOB-7687445","priority_score":541,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"5.1","score":255},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"URL Redirection to Untrusted Site ('Open Redirect')"},{"exploit_maturity":"No Known Exploit","id":"SNYK-PYTHON-WEBOB-7687445","priority_score":541,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"5.1","score":255},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"URL Redirection to Untrusted Site ('Open Redirect')"}],"prId":"31c78b4d-d0b9-4423-a4c5-cfaa16092265","prPublicId":"31c78b4d-d0b9-4423-a4c5-cfaa16092265","packageManager":"pip","priorityScoreList":[541],"projectPublicId":"17a20a42-58e0-4b73-bc70-d015b3063b04","projectUrl":"https://app.snyk.io/org/kroman0/project/17a20a42-58e0-4b73-bc70-d015b3063b04?utm_source=github&utm_medium=referral&page=fix-pr","prType":"fix","templateFieldSources":{"branchName":"default","commitMessage":"default","description":"default","title":"default"},"templateVariants":["updated-fix-title","pr-warning-shown","priorityScore"],"type":"auto","upgrade":[],"vulns":["SNYK-PYTHON-WEBOB-7687445"],"patch":[],"isBreakingChange":false,"remediationStrategy":"vuln"}'

[guardrails]

⚠️ We detected 3 security issues in this pull request:

Vulnerable Libraries (3)

Severity	Details
High	pkg:pypi/jinja2@2.7.3 (t) upgrade to: 9b53045c34e61013dc8f09b7e52a555fa16bed16,2.8.1
High	pkg:pypi/pygments@2.0.2 (t) upgrade to: 2.7.4
Critical	pkg:pypi/pyyaml@3.11 (t) upgrade to: 5.4

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