Add unmaintained dotenv & Co. (#1359)

Author: pinkforest

crates/dotenv/RUSTSEC-0000-0000.md

@@ -0,0 +1,22 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "dotenv"
+date = "2021-12-24"
+url = "https://github.com/dotenv-rs/dotenv/issues/74"
+informational = "unmaintained"
+
+[versions]
+patched = []
+```
+
+# dotenv is Unmaintained
+
+dotenv by description is meant to be used in development or testing only.
+
+Using this in production may or may not be advisable.
+
+## Alternatives
+
+The below may or may not be feasible alternative(s):
+- [dotenvy](https://crates.io/crates/dotenvy)

crates/dotenv_codegen/RUSTSEC-0000-0000.md

@@ -0,0 +1,22 @@
+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "dotenv_codegen"
+date = "2021-12-24"
+url = "https://github.com/dotenv-rs/dotenv/issues/74"
+informational = "unmaintained"
+
+[versions]
+patched = []
+```
+
+# dotenv is Unmaintained
+
+dotenv by description is meant to be used in development or testing only.
+
+Using this in production may or may not be advisable.
+
+## Alternatives
+
+The below may or may not be feasible alternative(s):
+- [dotenvy_codegen_impl](https://crates.io/crates/dotenvy_codegen_impl)