Update submodules

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

SPIRV-Cross @ 4e2fdb25

-Subproject commit f09ba2777714871bddb70d049878af34b94fa54d
+Subproject commit 4e2fdb25671c742a9fbe93a6034eb1542244c7e1

Vulkan-Headers @ bd6443d2

-Subproject commit b092b2fccc812453c1d0ec0a829eb8f34f174803
+Subproject commit bd6443d28f2ebecedfb839b52d612011ba623d14

Vulkan-Hpp @ 7c073da2

-Subproject commit a577b390e8651e9b1351d7c6839a4f43303c0f34
+Subproject commit 7c073da2c1c26cfaa36f32f34b0972e146314128

VulkanMemoryAllocator @ 708428c2

-Subproject commit 73d13a83ede142fa030d84e603a313831fcc424a
+Subproject commit 708428c219a9c8c3aeaff1a5cf64b0069592ffdf

VulkanMemoryAllocator-Hpp @ 2e9ab714

-Subproject commit 62b1d32e96acf36f6da619d3f818d2edc7cbbc7b
+Subproject commit 2e9ab714e9f0cdf6d07891fa6f359e91f3096369

glfw @ 8f470597

-Subproject commit dd8a678a66f1967372e5a5e3deac41ebf65ee127
+Subproject commit 8f470597d625ae28758c16b4293dd42d63e8a83a

json @ b2306145

-Subproject commit bc889afb4c5bf1c0d8ee29ef35eaaf4c8bef8a5d
+Subproject commit b2306145e1789368e6f261680e8dc007e91cc986

stb @ 5736b15f

-Subproject commit 8b5f1f37b5b75829fc72d38e7b5d4bcbf8a26d55
+Subproject commit 5736b15f7ea0ffb08dd38af21067c314d6a3aae9

glm @ efec5db0

-Subproject commit cc98465e3508535ba8c7f6208df934c156a018dc
+Subproject commit efec5db081e3aad807d0731e172ac597f6a39447

imgui @ 696a5335

-Subproject commit 08752b372e5ebeb39adec59387590dac9d9e68f7
+Subproject commit 696a53353273f7dfb16a14612b3554660abe94ec

glslang @ 6d41bb9c

-Subproject commit 5755de46b07e4374c05fb1081f65f7ae1f8cca81
+Subproject commit 6d41bb9c557c5a0eec61ffba1f775dc5f717a8f7