Switch to jemalloc to reduce memory usage

Cargo.lock

@@ -864,6 +864,7 @@ dependencies = [
  "chrono",
  "hex",
  "image",
+ "jemallocator",
  "kamadak-exif",
  "minijinja",
  "serde",
@@ -888,6 +889,26 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fad582f4b9e86b6caa621cabeb0963332d92eea04729ab12892c2533951e6440"
 
+[[package]]
+name = "jemalloc-sys"
+version = "0.5.3+5.3.0-patched"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9bd5d616ea7ed58b571b2e209a65759664d7fb021a0819d7a790afc67e47ca1"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "jemallocator"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16c2514137880c52b0b4822b563fadd38257c1f380858addb74a400889696ea6"
+dependencies = [
+ "jemalloc-sys",
+ "libc",
+]
+
 [[package]]
 name = "jobserver"
 version = "0.1.26"