Bump base/crengine for SVG images support

Parsing and rasterisation provided by nanosvg (some svg tags like text,
span and images are not supported).
Only svg image included as files in the .epub are supported
(embedded svg tags in html are not).
Holding on svg image shows it 4x zoomed in ImageViewer.

.ci/install.sh

@@ -10,7 +10,10 @@ echo "pwd: $(pwd)"
 ls
 
 # toss submodules if there are any changes
-if [ "$(git status --ignore-submodules=dirty --porcelain)" ]; then
+# if [ "$(git status --ignore-submodules=dirty --porcelain)" ]; then
+# "--ignore-submodules=dirty", removed temporarily, as it did not notice as
+# expected that base was updated and kept using old cached base
+if [ "$(git status --porcelain)" ]; then
     # what changed?
     git status
     # purge and reinit submodules

base

@@ -1 +1 @@
-Subproject commit 38ba3849b84d99d7f0a28bd3762d132b0ef98e80
+Subproject commit b7d41fac1165b053a5110156f9d5543cbbf9338e