[Snyk] Security upgrade functions_framework from 0.7.0 to 0.7.1

[benjaminhuo]

Snyk has created this PR to fix 2 vulnerabilities in the rubygems dependencies of this project.

Snyk changed the following file(s):

• builders/testdata/ruby/functions/with_env_var/Gemfile
• builders/testdata/ruby/functions/with_env_var/Gemfile.lock

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Interpretation Conflict SNYK-RUBY-RACK-15878035	601
	Improper Handling of Length Parameter Inconsistency SNYK-RUBY-RACK-15878237	601

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