gitlab-ci: remove `dependencies` from jobs

Historically, `needs` specifies the jobs which need to complete
successfully and `dependencies` specifies the jobs which provide
artifacts which should be used. Modern GitLab discourages using both as
`needs` now supports an `artifacts` key to say "depend on but do not use
artifacts", so remove `dependencies` and use `needs:artifacts` where
necessary.

See: https://docs.gitlab.com/ee/ci/yaml/#needsartifacts

.gitlab-ci.yml

@@ -27,7 +27,7 @@ stages:
 # Additionally, jobs may also contain:
 #
 #   - artifacts
-#   - dependency/needs jobs for required jobs
+#   - needs jobs for required jobs
 ################################################################################
 
 # CI strategy for DIY.
@@ -59,8 +59,6 @@ test:fedora36-mpich:
     - .cmake_test_linux
     - .linux_builder_tags
     - .run_automatically
-  dependencies:
-    - build:fedora36-mpich
   needs:
     - build:fedora36-mpich
 
@@ -78,8 +76,6 @@ test:fedora36-mpich-nothreads:
     - .cmake_test_linux
     - .linux_builder_tags
     - .run_automatically
-  dependencies:
-    - build:fedora36-mpich-nothreads
   needs:
     - build:fedora36-mpich-nothreads
 
@@ -98,8 +94,6 @@ test:fedora36-openmpi:
     - .linux_builder_tags
     - .cmake_build_artifacts
     - .run_automatically
-  dependencies:
-    - build:fedora36-openmpi
   needs:
     - build:fedora36-openmpi
 
@@ -118,8 +112,6 @@ test:fedora36-asan:
     - .linux_tester_priv_tags
     - .cmake_build_artifacts
     - .run_automatically
-  dependencies:
-    - build:fedora36-asan
   needs:
     - build:fedora36-asan
 
@@ -138,8 +130,6 @@ test:fedora36-ubsan:
     - .linux_tester_priv_tags
     - .cmake_build_artifacts
     - .run_automatically
-  dependencies:
-    - build:fedora36-ubsan
   needs:
     - build:fedora36-ubsan
 
@@ -156,8 +146,6 @@ test:windows_vs2022_debug:
     - .windows_tags
     - .cmake_test_windows
     - .run_automatically
-  dependencies:
-    - build:windows_vs2022_debug
   needs:
     - build:windows_vs2022_debug
 
@@ -174,7 +162,5 @@ test:windows_vs2022_release:
     - .windows_tags
     - .cmake_test_windows
     - .run_automatically
-  dependencies:
-    - build:windows_vs2022_release
   needs:
     - build:windows_vs2022_release