Fix dependencies and switch to new download format

pkg.info

@@ -1,12 +1,48 @@
 name: openjdk-21
 description: OpenJDK Java 21
 version: 21.0.9+4
-revision: 3
+revision: 4
 url: https://openjdk.org/
 license: GPL2-only WITH Classpath-exception-2.0
 architecture: any
-depends: ["freetype2", "gcc-libs", "glibc", "harfbuzz", "hicolor-icon-theme", "lcms2", "libelf", "libjpeg-turbo", "libpng", "nss"]
-optional_depends: ["alsa-lib", "gtk3", "tide-java-utils"]
-make_depends: ["alsa-lib", "bash", "cpio", "cups", "giflib", "jdk21", "libx11", "libxext", "libxrandr", "libxrender", "libxt", "libxtst", "zip", "unzip"]
-provides: ["jre", "jre21", "jdk", "jdk21"]
 type: source
+depends:
+  - freetype2
+  - gcc-libs
+  - glibc
+  - harfbuzz
+  - hicolor-icon-theme
+  - lcms2
+  - libelf
+  - libjpeg-turbo
+  - libpng
+  - nss
+  - tide-java-utils
+optional_depends:
+  - alsa-lib
+  - gtk3
+make_depends:
+  - alsa-lib
+  - bash
+  - cpio
+  - cups
+  - giflib
+  - jdk21
+  - libx11
+  - libxext
+  - libxrandr
+  - libxrender
+  - libxt
+  - libxtst
+  - zip
+  - unzip
+provides:
+  - jre
+  - jre21
+  - jdk
+  - jdk21
+downloads:
+  - url: https://github.com/openjdk/jdk${BPM_PKG_VERSION%%.*}u/archive/jdk-${BPM_PKG_VERSION}.tar.gz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: a34604596394d879a6a64d2c2e5535e0844d29db36fec204689d95533e537754