apacheGH-36746: [R] Update NEWS.md for 12.0.1.1 release (apache#36747)

### What changes are included in this PR?

Update NEWS.md in the R package to include 12.0.1.1 release

### Are these changes tested?

No

### Are there any user-facing changes?

No
* Closes: apache#36746

Authored-by: Nic Crane <thisisnic@gmail.com>
Signed-off-by: Nic Crane <thisisnic@gmail.com>

r/NEWS.md

@@ -19,6 +19,10 @@
 
 # arrow 12.0.1.9000
 
+# arrow 12.0.1.1
+
+* Update a package version reference to be text only instead of numeric due to CRAN update requiring this (#36353, #36364)
+
 # arrow 12.0.1
 
 * Update the version of the date library vendored with Arrow C++ library