Set the chart's placeholder version to 0.1.1

Cosmetic: `make helm-package` passes --version/--app-version from the
tag (da48814's own comment), so this field decides nothing about what
gets published. Still done so the tree doesn't say 0.1.0 while heading
for a v0.1.1 release. Cites da48814 (the fix this version actually is).

charts/terdut-operator/Chart.yaml

@@ -6,8 +6,8 @@ type: application
 # These fields decide nothing: `make helm-package` passes --version and
 # --app-version from the release tag (same reasoning as terdut-server's own
 # chart). They're for whoever reads the tree before a tag exists.
-version: 0.1.0
+version: 0.1.1
-appVersion: "v0.1.0"
+appVersion: "v0.1.1"
 
 keywords:
   - kubernetes