Add build server upgrade to NEWS.

NEWS

@@ -3,6 +3,7 @@
  * Remove Python cache files before each Tox run.
  * Add #borgmatic Freenode IRC channel to documentation.
  * Add Borg/borgmatic hosting providers section to documentation.
+ * Upgrade project build server from Drone 0.8 to 1.1.
 
 1.3.5
  * #153: Support for various Borg directory environment variables (BORG_CONFIG_DIR, BORG_CACHE_DIR,

scripts/run-tests

@@ -11,4 +11,3 @@ pip install tox==3.10.0
 tox
 apk add --no-cache borgbackup
 tox -e end-to-end
-