Bump guardian_db from 5da47ba to f194bb2

Bumps [guardian_db](https://github.com/ueberauth/guardian_db) from `5da47ba` to `f194bb2`.
- [Release notes](https://github.com/ueberauth/guardian_db/releases)
- [Commits](ueberauth/guardian_db@5da47ba...f194bb2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

mix.lock

@@ -32,7 +32,7 @@
   "gettext": {:hex, :gettext, "0.16.1", "e2130b25eebcbe02bb343b119a07ae2c7e28bd4b146c4a154da2ffb2b3507af2", [:mix], [], "hexpm"},
   "gravatar": {:hex, :gravatar, "0.1.0", "536d8dbe9ef9b6a63b0b57e66e41682deb55a27f343d6684fc28c14ad00a33ee", [:mix], [], "hexpm"},
   "guardian": {:hex, :guardian, "1.1.1", "be14c4007eaf05268251ae114030cb7237ed9a9631c260022f020164ff4ed733", [:mix], [{:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.0 or ~> 1.2 or ~> 1.3", [hex: :phoenix, repo: "hexpm", optional: true]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: true]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
-  "guardian_db": {:git, "https://github.com/ueberauth/guardian_db.git", "5da47ba9850b006ae178401814380ee864749a2e", []},
+  "guardian_db": {:git, "https://github.com/ueberauth/guardian_db.git", "f194bb2d211bb191d5b317e67998c295061d4831", []},
   "hackney": {:hex, :hackney, "1.15.1", "9f8f471c844b8ce395f7b6d8398139e26ddca9ebc171a8b91342ee15a19963f4", [:rebar3], [{:certifi, "2.5.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
   "httpoison": {:hex, :httpoison, "1.3.1", "7ac607311f5f706b44e8b3fab736d0737f2f62a31910ccd9afe7227b43edb7f0", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},