Update Rust crate spdx to v0.8.1

Author: renovate-bot

Cargo.lock

@@ -77,7 +77,7 @@ sentry-conduit = { version = "=0.5.0", default-features = false }
 serde = { version = "=1.0.136", features = ["derive"] }
 serde_json = "=1.0.78"
 sha2 = "=0.10.1"
-spdx = "=0.8.0"
+spdx = "=0.8.1"
 swirl = { git = "https://github.com/sgrif/swirl.git", rev = "e87cf37" }
 tar = "=0.4.38"
 tempfile = "=3.3.0"