chore: drop support for node 14

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

.github/workflows/build-and-test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ['14', '16']
+        node: ['16']
     name: Node ${{ matrix.node }}
     steps:
       - name: Checkout repository

docs/content/setup/manual-setup.md

@@ -1,7 +1,8 @@
 # Manual Installation
 
 !!! info "Requirements on your server"
-    - Node.js `>= 14.13.1` or any version of Node 16. Node 18 is NOT supported. We recommend to run HedgeDoc with the latest release of Node 16.
+    - Node.js 16
+      Newer versions are NOT supported. We recommend to run HedgeDoc with the latest release of Node 16.
     - Database (PostgreSQL, MySQL, MariaDB, SQLite)  
       The database must use charset `utf8`. This is typically the default in PostgreSQL and SQLite.  
       In MySQL and MariaDB UTF-8 might need to be set with `alter database <DBNAME> character set utf8 collate utf8_bin;`  

package.json

@@ -107,7 +107,7 @@
     "xss": "^1.0.3"
   },
   "engines": {
-    "node": "^14.13.1 || 16.x"
+    "node": "16.x"
   },
   "bugs": "https://github.com/hedgedoc/hedgedoc/issues",
   "keywords": [

public/docs/release-notes.md

@@ -2,6 +2,9 @@
 
 ## UNRELEASED
 
+**Please note:** This release dropped support for Node 14, which is end-of-life since May 2023.
+You now need Node 16 to run HedgeDoc. We don't support more recent versions of Node.
+
 ### Enhancements
 - Extend boolean environment variable parsing with other positive answers and case insensitivity.
 - Allow setting of `documentMaxLength` via `CMD_DOCUMENT_MAX_LENGTH` environment variable.