signing-party 1.1.5

Closes #27815.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
pebble-sdk: removed unused dependency: pillow.
pebble-sdk: update 2.0.2 bottle.

Closes #27812.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
bottle_version: handle pazpar2 style.
pazpar2: test and use make install.

Address @mikemcquaid’s remarks on pull requests #27547 and #27784:

* add a test: (ask pazpar2 to test a trivial server
	configuration file; to be honest I doubt this test
	is much more significant than testing the version)
* use double quotes instead of quotes for strings
	(it would be helpful if the examples/documentation
	just stated this »rule«)
* use make install instead of bin.install (the binary
	ends up in sbin this way)
* split command arguments
* linebreak
* replace »TEST_CONFIG« with »EOS«
pazpar2: add 1.6.39 bottle.

Closes #27784.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>