pkg/pillar: update fscrypt SHA

Pillar is crossbuildable, and it seems that every dependable
package has to be crossbuildable as well. Update fscrypt SHA,
which includes arm64 and riscv builds.

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>

pkg/pillar/Dockerfile

@@ -115,7 +115,7 @@ RUN --mount=type=cache,target=/root/.cache/go-build if [ "${TEST_TOOLS}" = "y" ]
     GOBIN=/final/opt/ GOFLAGS="" go install gotest.tools/gotestsum@v1.7.0; \
 fi
 
-FROM lfedge/eve-fscrypt:e8507303431c8c11ec1a2b3b7fb02e1a0dcdf296 as fscrypt
+FROM lfedge/eve-fscrypt:68d40d7e70585669adef91279ba39dd134d3a15f as fscrypt
 FROM lfedge/eve-dnsmasq:3af908d86a95a627c729e09b1b125bf8de7fadcb as dnsmasq
 FROM lfedge/eve-gpt-tools:51ecda7bc185c655c1d0423228dc83e29d4c674d as gpttools