build(deps): bump rcgen from 0.11.3 to 0.12.0 (#2677)

Bumps [rcgen](https://github.com/rustls/rcgen) from 0.11.3 to 0.12.0.
- [Commits](rustls/rcgen@v0.11.3...v0.12.0)

---
updated-dependencies:
- dependency-name: rcgen
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -1576,7 +1576,7 @@ dependencies = [
  "linkerd-tls-test-util",
  "linkerd-tracing",
  "pin-project",
- "rcgen 0.11.3",
+ "rcgen",
  "tokio",
  "tracing",
 ]
@@ -1630,7 +1630,7 @@ version = "0.1.0"
 dependencies = [
  "linkerd-error",
  "linkerd-identity",
- "rcgen 0.12.0",
+ "rcgen",
  "tracing",
  "x509-parser",
 ]
@@ -1909,7 +1909,7 @@ dependencies = [
  "linkerd-proxy-http",
  "linkerd-stack",
  "linkerd-tonic-watch",
- "rcgen 0.11.3",
+ "rcgen",
  "simple_asn1",
  "spiffe-proto",
  "thiserror",
@@ -2794,18 +2794,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "977b1e897f9d764566891689e642653e5ed90c6895106acd005eb4c1d0203991"
 
-[[package]]
-name = "rcgen"
-version = "0.11.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52c4f3084aa3bc7dfbba4eff4fab2a54db4324965d8872ab933565e6fbd83bc6"
-dependencies = [
- "pem",
- "ring 0.16.20",
- "time",
- "yasna",
-]
-
 [[package]]
 name = "rcgen"
 version = "0.12.0"

linkerd/meshtls/Cargo.toml

@@ -29,7 +29,7 @@ linkerd-tls = { path = "../tls" }
 [dev-dependencies]
 tokio = { version = "1", features = ["macros", "net", "rt-multi-thread"] }
 tracing = "0.1"
-rcgen = "0.11.3"
+rcgen = "0.12.0"
 
 linkerd-conditional = { path = "../conditional" }
 linkerd-proxy-transport = { path = "../proxy/transport" }

linkerd/proxy/spire-client/Cargo.toml

@@ -24,5 +24,5 @@ asn1 = { version = "0.6", package = "simple_asn1" }
 thiserror = "1"
 
 [dev-dependencies]
-rcgen = "0.11.3"
+rcgen = "0.12.0"
 tokio-test = "0.4"