upgrade petsc/slepc to 3.15

- 3.15 is the version provided by Ubuntu Jammy

cmake/ae108-config.cmake

@@ -20,7 +20,7 @@ find_dependency(Boost 1.67 COMPONENTS program_options REQUIRED)
 find_dependency(Eigen3 3.3 CONFIG REQUIRED)
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/modules")
-find_dependency(AE108_PETSc MODULE 3.12)
+find_dependency(AE108_PETSc MODULE 3.15)
 
 find_dependency(range-v3 0.10.0 CONFIG REQUIRED)
 

cmake/modules/FindAE108_GTest.cmake

@@ -47,4 +47,4 @@ endif()
 
 find_package_handle_standard_args(AE108_GTest
     REQUIRED_VARS GTest_FOUND
-)
\ No newline at end of file
+)

cmake/modules/FindAE108_SLEPc.cmake

@@ -15,7 +15,7 @@
 
 include(FindPkgConfig)
 pkg_check_modules(SLEPc SLEPc IMPORTED_TARGET)
-find_package(AE108_PETSc 1.12 MODULE)
+find_package(AE108_PETSc 3.15 MODULE)
 
 find_package_handle_standard_args(AE108_SLEPc
                                   REQUIRED_VARS SLEPc_FOUND AE108_PETSc_FOUND
@@ -28,4 +28,4 @@ if(AE108_SLEPc_FOUND AND NOT TARGET ae108::external::slepc)
                           INTERFACE PkgConfig::SLEPc
                           INTERFACE ae108::external::petsc
     )
-endif()
\ No newline at end of file
+endif()

docker/Dockerfile

@@ -46,4 +46,4 @@ RUN apt-get update && \
         DEBIAN_FRONTEND="noninteractive" \
         apt-get install -y \
         libpetsc-${PETSC_SCALAR_TYPE}-dev \
-        libslepc-${PETSC_SCALAR_TYPE}3.12-dev
+        libslepc-${PETSC_SCALAR_TYPE}3.15-dev