ci: replace deprecated workflow syntax

.woodpecker/docs.yml

@@ -6,13 +6,15 @@ when:
       - ${CI_REPO_DEFAULT_BRANCH}
 
 steps:
-  markdownlint:
+  - name: markdownlint
     image: quay.io/thegeeklab/markdownlint-cli
+    depends_on: []
     commands:
       - markdownlint 'README.md'
 
-  spellcheck:
+  - name: spellcheck
     image: quay.io/thegeeklab/alpine-tools
+    depends_on: []
     commands:
       - spellchecker --files 'README.md' -d .dictionary -p spell indefinite-article syntax-urls
     environment:

.woodpecker/notify.yml

@@ -1,26 +0,0 @@
----
-when:
-  - event: [tag]
-  - event: [push, manual]
-    branch:
-      - ${CI_REPO_DEFAULT_BRANCH}
-
-runs_on: [success, failure]
-
-steps:
-  matrix:
-    image: quay.io/thegeeklab/wp-matrix
-    settings:
-      homeserver:
-        from_secret: matrix_homeserver
-      password:
-        from_secret: matrix_password
-      roomid:
-        from_secret: matrix_roomid
-      username:
-        from_secret: matrix_username
-    when:
-      - status: [success, failure]
-
-depends_on:
-  - docs

.woodpecker/test.yml

@@ -6,8 +6,7 @@ when:
       - ${CI_REPO_DEFAULT_BRANCH}
 
 steps:
-  lint:
-    group: test
+  - name: lint
     image: docker.io/koalaman/shellcheck-alpine:stable
     commands:
       - grep -ErlI '^#!(.*/|.*env +)(sh|bash|ksh)' ./shell/ | xargs -r shellcheck