Upgrade lazy_static to get rid of compile warning

Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aho-corasick"
 version = "0.6.10"
@@ -1066,7 +1068,7 @@ dependencies = [
  "futures-cpupool",
  "hyper",
  "indoc",
- "lazy_static 0.2.11",
+ "lazy_static 1.4.0",
  "libsqlite3-sys",
  "maplit",
  "matches",

Cargo.toml

@@ -29,7 +29,7 @@ diff = "0.1"
 futures = "0.1"
 futures-cpupool = "0.1"
 hyper = "0.11"
-lazy_static = "0.2"
+lazy_static = "1.4.0"
 maplit = "1"
 percent-encoding = "1.0"
 r2d2 = "0.8"