patch 9.1.1370: CI Tests favor GTK2 over GTK3

Problem:  CI Tests favor GTK2 over GTK3
Solution: Install GTK3 dependencies and debug packages for CI workflows,
          update ASAN suppression list, update required dependency
          checks for the tests (Drew Vogel)

closes: #17253

Signed-off-by: Drew Vogel <dvogel@github>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_balloon.vim b/src/testdir/test_balloon.vim
index 3db37a7..1a9e225 100644
--- a/src/testdir/test_balloon.vim
+++ b/src/testdir/test_balloon.vim
@@ -6,7 +6,6 @@
 CheckFeature balloon_eval_term
 
 source screendump.vim
-CheckScreendump
 
 let s:common_script =<< trim [CODE]
   call setline(1, ["one one one", "two tXo two", "three three three"])
@@ -19,6 +18,7 @@
 [CODE]
 
 func Test_balloon_eval_term()
+  CheckScreendump
   " Use <Ignore> after <MouseMove> to return from vgetc() without removing
   " the balloon.
   let xtra_lines =<< trim [CODE]
@@ -49,6 +49,7 @@
 endfunc
 
 func Test_balloon_eval_term_visual()
+  CheckScreendump
   " Use <Ignore> after <MouseMove> to return from vgetc() without removing
   " the balloon.
   call writefile(s:common_script + [
@@ -66,6 +67,7 @@
 endfunc
 
 func Test_balloon_eval_term_rightleft()
+  CheckScreendump
   CheckFeature rightleft
 
   " Use <Ignore> after <MouseMove> to return from vgetc() without removing