update cpright in the spec

Signed-off-by: Lukas Jungmann <lukas.jungmann@oracle.com>
diff --git a/spec/src/main/asciidoc/license-efsl.adoc b/spec/src/main/asciidoc/license-efsl.adoc
index 748fec6..811816e 100644
--- a/spec/src/main/asciidoc/license-efsl.adoc
+++ b/spec/src/main/asciidoc/license-efsl.adoc
@@ -14,7 +14,7 @@
 Release: {revdate}
 ....
 
-Copyright (c) 2019, 2020 Eclipse Foundation.
+Copyright (c) 2019, 2021 Eclipse Foundation.
 
 === Eclipse Foundation Specification License