Bump kopf version

latest kopf 1.42.0 is potentially able to resolve a slew of bugs
related to controller missing events, see
nolar/kopf#844

Related-Issue: PRODX-56742 PRODX-57473
Change-Id: Ia535929623d710ab20975b8030d940eb5179780b

Author: pshchelo

requirements.txt

@@ -1,6 +1,6 @@
 dacite
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-kopf==1.37.4
+kopf==1.42.0
 Jinja2>2.10
 jsonpath-ng
 deepmerge>0.2