Test data: replace "::" by ":"

The current test generator code accepts multiple colons as a
separator, but this is just happenstance due to how the code, it isn't
robust. Replace "::" by ":", which is more future-proof and allows
simple separator-based navigation.
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 448483d..1f3c136 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -690,11 +690,11 @@
 
 Copy fail: source=ECDSA(SHA224)+ECDH, target=ECDSA(SHA256)+ECDH
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDSA_C:MBEDTLS_ECDH_C:MBEDTLS_SHA256_C
-copy_fail:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDSA(PSA_ALG_SHA_224):PSA_ALG_ECDH:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP256R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":0:0:PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDSA(PSA_ALG_SHA_256):PSA_ALG_ECDH::PSA_ERROR_INVALID_ARGUMENT
+copy_fail:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDSA(PSA_ALG_SHA_224):PSA_ALG_ECDH:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP256R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":0:0:PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDSA(PSA_ALG_SHA_256):PSA_ALG_ECDH:PSA_ERROR_INVALID_ARGUMENT
 
 Copy fail: source=ECDH+ECDSA(SHA224), target=ECDH+ECDSA(SHA256)
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDSA_C:MBEDTLS_ECDH_C:MBEDTLS_SHA256_C
-copy_fail:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_ALG_ECDSA(PSA_ALG_SHA_224):PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP256R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":0:0:PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:PSA_ALG_ECDSA(PSA_ALG_SHA_256)::PSA_ERROR_INVALID_ARGUMENT
+copy_fail:PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_SIGN | PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE:PSA_ALG_ECDH:PSA_ALG_ECDSA(PSA_ALG_SHA_224):PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP256R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":0:0:PSA_KEY_USAGE_VERIFY | PSA_KEY_USAGE_DERIVE | PSA_KEY_USAGE_EXPORT:PSA_ALG_ECDH:PSA_ALG_ECDSA(PSA_ALG_SHA_256):PSA_ERROR_INVALID_ARGUMENT
 
 Hash operation object initializers zero properly
 hash_operation_init:
@@ -1833,7 +1833,7 @@
 
 PSA key derivation: unsupported key derivation algorithm [#1]
 depends_on:MBEDTLS_MD_C:MBEDTLS_SHA256_C
-derive_setup::PSA_ALG_HKDF(PSA_ALG_CATEGORY_HASH):PSA_ERROR_NOT_SUPPORTED
+derive_setup:PSA_ALG_HKDF(PSA_ALG_CATEGORY_HASH):PSA_ERROR_NOT_SUPPORTED
 
 PSA key derivation: unsupported key derivation algorithm [#2]
 depends_on:MBEDTLS_MD_C:MBEDTLS_SHA256_C