Solve issues detected by Sobelow

[wevtimoteo]

Solve following issues detected by Sobelow:

$ mix sobelow
WARNING: Sobelow cannot find the router. If this is a Phoenix application
please use the `--router` flag to specify the router's location.

##############################################
#                                            #
#          Running Sobelow - v0.10.4         #
#  Created by Griffin Byatt - @griffinbyatt  #
#     NCC Group - https://nccgroup.trust     #
#                                            #
##############################################

Config.HTTPS: HTTPS Not Enabled - High Confidence

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Traversal.FileModule: Directory Traversal in `File.open` - Low Confidence
File: lib/git_pair/actions.ex
Line: 58
Function: _modify_commit_msg:55
Variable: path

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Traversal.FileModule: Directory Traversal in `File.mkdir_p!` - Low Confidence
File: lib/git_pair/actions.ex
Line: 18
Function: init:17
Variable: Elixir.Path

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DOS.StringToAtom: Unsafe `String.to_atom` - Low Confidence
File: lib/git_pair/cli.ex
Line: 50
Function: execute_command:49
Variable: action

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DOS.StringToAtom: Unsafe `String.to_atom` - Low Confidence
File: lib/git_pair/cli.ex
Line: 46
Function: execute_command:45
Variable: action

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