Check latest dependency compatibility in nightly CI job

The nightly workflow has been extended with a job that verifies if the
crate can be built with the latest (compatible) versions of all
dependencies. The job will not fail the overall workflow execution
but provides an indication that the crate's MSRV might need to be
adapted.

.github/workflows/nightly.yaml

@@ -32,6 +32,9 @@ jobs:
   check-msrv:
     uses: ./.github/workflows/verify-msrv.yaml
 
+  check-latest-deps:
+    uses: ./.github/workflows/verify-latest-deps.yaml
+
   deny:
     runs-on: ubuntu-latest
     steps:

.github/workflows/verify-latest-deps.yaml

@@ -0,0 +1,39 @@
+# ********************************************************************************
+#  Copyright (c) 2024 Contributors to the Eclipse Foundation
+#
+#  See the NOTICE file(s) distributed with this work for additional
+#  information regarding copyright ownership.
+#
+#  This program and the accompanying materials are made available under the
+#  terms of the Apache License Version 2.0 which is available at
+#  https://www.apache.org/licenses/LICENSE-2.0
+#
+#  SPDX-License-Identifier: Apache-2.0
+# *******************************************************************************/
+
+# Checks if the crate can be built using the latest stable toolchain with the latest
+# compatible dependencies.
+# The job definition has been inspired by the example given in the Rust Cargo book.
+
+name: Check latest dependencies
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  latest-deps:
+    name: Latest Dependencies
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    env:
+      CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: allow
+    steps:
+    - uses: actions/checkout@v4
+    - run: rustup update stable && rustup default stable
+    - run: cargo update --verbose
+    - run: cargo build --verbose --all-features
+    - run: cargo test --verbose --all-features