Add || true so doesn't fail when unable to encrypt

Signed-off-by: campionfellin <campionfellin@gmail.com>

.travis.yml

@@ -14,7 +14,7 @@ cache:
   - "$HOME/.npm"
 before_install:
 - openssl aes-256-cbc -K $encrypted_0f9bbf7a60f4_key -iv $encrypted_0f9bbf7a60f4_iv
-  -in .clasprc.json.enc -out .clasprc.json -d
+  -in .clasprc.json.enc -out .clasprc.json -d || true
 - npm install -g npm@latest
 install:
 - npm ci