Deps update, gopkg.lock fix, flagger initialization fix.

vendor/golang.org/x/crypto/blowfish/cipher.go

@@ -3,6 +3,14 @@
 // license that can be found in the LICENSE file.
 
 // Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.
+//
+// Blowfish is a legacy cipher and its short block size makes it vulnerable to
+// birthday bound attacks (see https://sweet32.info). It should only be used
+// where compatibility with legacy systems, not security, is the goal.
+//
+// Deprecated: any new system should use AES (from crypto/aes, if necessary in
+// an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from
+// golang.org/x/crypto/chacha20poly1305).
 package blowfish // import "golang.org/x/crypto/blowfish"
 
 // The code is a port of Bruce Schneier's C implementation.