openjdk: add v21_35 (#40699)

* openjdk: add v21+35

* add provides java@21

* Update var/spack/repos/builtin/packages/openjdk/package.py

Co-authored-by: Wouter Deconinck <wdconinc@gmail.com>

---------

Co-authored-by: Wouter Deconinck <wdconinc@gmail.com>

var/spack/repos/builtin/packages/openjdk/package.py

@@ -18,6 +18,12 @@
 #    format returned by platform.system() and 'arch' by platform.machine()
 
 _versions = {
+    "21.0.0_35": {
+        "Linux-x86_64": (
+            "82f64c53acaa045370d6762ebd7441b74e6fda14b464d54d1ff8ca941ec069e6",
+            "https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21%2B35/OpenJDK21U-jdk_x64_linux_hotspot_21_35.tar.gz",
+        )
+    },
     "17.0.8.1_1": {
         "Linux-x86_64": (
             "c25dfbc334068a48c19c44ce39ad4b8427e309ae1cfa83f23c102e78b8a6dcc0",
@@ -348,6 +354,7 @@ class Openjdk(Package):
 
             version(ver, sha256=pkg[0], url=pkg[1], preferred=is_preferred)
 
+    provides("java@21", when="@21.0:21")
     provides("java@17", when="@17.0:17")
     provides("java@16", when="@16.0:16")
     provides("java@11", when="@11.0:11")