Fix Wpointer-sign compiler warning

```
providers/implementations/signature/ecdsa_sig.c: scope_hint: In function 'do_ec_pct'
providers/implementations/signature/ecdsa_sig.c:594:46: warning[-Wpointer-sign]: pointer targets in passing argument 2 of 'ecdsa_digest_signverify_update' differ in signedness
providers/implementations/signature/ecdsa_sig.c:325:69: note: expected 'const unsigned char *' but argument is of type 'const char *'
```

```
providers/implementations/signature/rsa_sig.c: scope_hint: In function 'do_rsa_pct'
providers/implementations/signature/rsa_sig.c:1518:44: warning[-Wpointer-sign]: pointer targets in passing argument 2 of 'rsa_digest_signverify_update' differ in signedness
providers/implementations/signature/rsa_sig.c:910:62: note: expected 'const unsigned char *' but argument is of type 'const char *'
```

Resolves: rhbz#2178034
Signed-off-by: Clemens Lang <cllang@redhat.com>

0044-FIPS-140-3-keychecks.patch

@@ -190,7 +190,7 @@ diff -up openssl-3.0.7/providers/implementations/signature/ecdsa_sig.c.pairwise
 +#ifdef FIPS_MODULE
 +int do_ec_pct(void *vctx, const char *mdname, void *ec)
 +{
-+    static const char data[32];
++    static const unsigned char data[32];
 +    unsigned char sigbuf[256];
 +    size_t siglen = sizeof(sigbuf);
 +
@@ -321,7 +321,7 @@ diff -up openssl-3.0.7/providers/implementations/signature/rsa_sig.c.pairwise op
 +#ifdef FIPS_MODULE
 +int do_rsa_pct(void *vctx, const char *mdname, void *rsa)
 +{
-+    static const char data[32];
++    static const unsigned char data[32];
 +    unsigned char *sigbuf = NULL;
 +    size_t siglen = 0;
 +    int ret = 0;

openssl.spec

@@ -29,7 +29,7 @@ print(string.sub(hash, 0, 16))
 Summary: Utilities from the general purpose cryptography library with TLS implementation
 Name: openssl
 Version: 3.0.7
-Release: 7%{?dist}
+Release: 8%{?dist}
 Epoch: 1
 # We have to remove certain patented algorithms from the openssl source
 # tarball with the hobble-openssl script which is included below.
@@ -505,6 +505,10 @@ install -m644 %{SOURCE9} \
 %ldconfig_scriptlets libs
 
 %changelog
+* Thu Mar 16 2023 Clemens Lang <cllang@redhat.com> - 1:3.0.7-8
+- Fix Wpointer-sign compiler warning 
+  Resolves: rhbz#2178034
+
 * Tue Mar 14 2023 Clemens Lang <cllang@redhat.com> - 1:3.0.7-7
 - Add explicit FIPS indicators to key derivation functions
   Resolves: rhbz#2175860 rhbz#2175864