chore(deps) update penlight from 1.5.4 to 1.7.0

[bungle]

Summary

1.7.0 (2019-10-14)

New features

• utils.quote_arg will now optionally take an array of arguments and escape them all into a single string.
• app.parse_args now accepts a 3rd parameter with a list of valid flags and aliases
• app.script_name returns the name of the current script (previously a private function)

Changes

• Documentation updates
• utils.quit: exit message is no longer required, and closes the Lua state (on 5.2+).
• utils.assert_arg and utils.assert_string: now return the validated value
• pl.compat: now exports the jit and jit52 flags
• pretty.write: now sorts the output for easier diffs [docs][changelog] add latest changes for 0.3.0 #293

Fixes

• utils.raise changed the global on_error-level when passing in bad arguments
• utils.writefile now checks and returns errors when writing
• compat.execute now handles the Windows exitcode -1 properly
• types.is_empty would return true on spaces always, indepedent of the parameter
• types.to_bool will now compare case-insensitive for the extra passed strings
• app.require_here will now properly handle an absolute base path
• stringx.split will no longer append an empty match if the number of requested elements has already been reached Global plugin configuration #295
• path.common_prefix and path.relpath return the result in the original casing (only impacted Windows) Supporting wildcard subdomains  #297
• dir.copyfile, dir.movefile, and dir.makepath create the new file/path with the requested casing, and no longer force lowercase (only impacted Windows) Supporting wildcard subdomains  #297
• added a missing assertion on path.getmtime kong quit does not stop dnsmasq #291
• stringx.rpartition returned bad results on a not-found Reports #299

1.6.0 (2018-11-23)

New features

• pl.compat now provides unpack as table.unpack on Lua 5.1

Changes

• utils.unpack is now documented and respects .n field of its argument.
• tablex.deepcopy and tablex.deepcompare are now cycle aware (Default logging format improvements #262)
• Installing through LuaRocks will now include the full rendered documentation

Fixes

• Fixed seq.last returning nil instead of an empty list when given an empty iterator ([feature] default key_names to "apikey" #253).
• pl.template now applies tostring when substituting values in templates, avoiding errors when they are not strings or numbers (mesos-dns domain 502 bad gateway #256).
• Fixed pl.import_into not importing some Penlight modules ([request] Capping Plugin #268).
• Fixed version number stuck at 1.5.2 ([chore] add vendor/ssl.lua and remove reset_db() #260).
• Fixed types.is_empty returning true on tables containing false key (Order in which Plugins are executed #267).
• Fixed test.assertraise throwing an error when passed an array with a function to call plus its arguments ([feature] Analytics plugin #272).
• Fixed test.assertraise not throwing an error when given function does not error but instead returns a string matching given error pattern.
• Fixed placeholder expressions being evaluated with wrong precedence of binary and unary negation.
• Fixed placeholder expressions being evaluated assuming wrong binary operator associativity (e.g. _1-(_2+_3) was evaluated as (_1-_2)+_3.
• Fixed placeholder expressions being evaluated as if unary operators take precedence over power operator (e.g. (-_1)^_2) was evaluated as -(_1^2)).
• Fixed vulnerable backtracking pattern in pl.stringx.strip (Kong warn info 2019/07/29 17:40:54 [warn] 26261#0: *553 [lua] balancer.lua:716: redistributeIndices(): [ringbalancer] redistributed indices, size=10000, dropped=10000, assigned=0, left unassigned=10000, context: ngx.timer #4847

[hutchic]

I think this needs a rebase so the unit tests will pass